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Night Friends-
    American Bats
     On-line Activity Guide




                  The National Wildlife Federation™ and
            Bat Conservation International are working with the
                U.S. Postal Service to promote the American
           Bats Stamps as a tool to educate and inspire Americans
            about the beauty of our nation's wildlife and urgent
                             need to conserve it.




                                      BAT CONSERVATION INTERNATIONAL


           You can purchase stamps by calling 1-800-STAMP24
                       or online at www.usps.com
NATIONAL WILDLIFE FEDERATION                                                                      BATS




                           Background

                           Origins and Relatives
                           Did you know that the world’s smallest mammal, the bumblebee bat,
                           weighs less than a penny?

                           Bats play a vital role in the health of our natural world, and are
                           fascinating creatures. They are a group of mammals that belong to
                           the group, “Chiroptera,” which means hand-wing. All living bat
                           species fit into one of two sub-groups, the Microchiroptera or the
                           Megachiroptera. Members of the latter group are often called
                           “flying foxes” because of their fox-like faces. They are found only
                           in the Old World tropics, while the Microchiroptera, which are
                           highly varied in appearance, occur worldwide.


                           Diversity and Distribution
                           The more than 1,000 species of bats make up approximately 25
                           percent of all mammal species, more than any other mammal
                           group except rodents, and they are found everywhere in the world




                                                                    AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   1

www.nwf.org
BATS                                                                   NATIONAL WILDLIFE FEDERATION




      except in the most extreme
      desert and polar regions. Some
      40 species live in the United
      States and Canada, but the
      majority inhabit tropical forests
      where, in total number of
      species, they sometimes
      outnumber all other mammals
      combined.

      Bats come in an amazing                                                    A bat emits a high-frequency sound,
      variety of sizes and appear-                                               which hits an object and bounces
      ances. While the bumblebee                                                 back to the bat, telling it how far
      bat is at one extreme, some                                                away the object (prey) is.
      flying foxes of the Old World
      tropics have wingspans of up to
      six feet. The big-eyed, winsome        intricate facial features that      total darkness they can detect
      expressions of flying foxes often      become more fascinating when        obstacles as fine as a human
      surprise people who would              their sophisticated role in navi-   hair. The sophistication of
      never have thought that a bat          gation is explored.                 these unique echolocation
      could be cute. Some bats have                                              systems surpasses current scien-
      long angora-like fur, ranging in                                           tific understanding and has
                                             Navigation and Migration            been estimated to be billions of
      color from bright red-brown or
                                             Like dolphins, most bats            times more efficient than any
      yellow to jet black or white.
                                             communicate and navigate            similar system developed by
      One species is furless, and
                                             with high-frequency sounds,         humans. In addition, bats are
      another even has pink wings
                                             which they bounce off of            not blind and many have excel-
      and ears. A few are so brightly
                                             objects to determine where and      lent vision.
      patterned that they are known
                                             how far away they are. Using
      as butterfly bats. Others have
                                             sound alone, bats can “see”         In temperate regions, cold
      enormous ears, nose leaves, and
                                             everything but color, and in        winters and the subsequent
                                                                                 lack of insect prey force bats to
                                                                                 migrate or hibernate. Most
                                                                                 travel fewer than 300 miles to
                                                                                 find a suitable cave or aban-
                                                                                 doned mine, where they
                                                                                    remain for up to six months
                                                                                  or more, surviving solely on
                                                                                 stored fat reserves. However,

2   | AMERICAN BATS: ONLINE ACTIVITY GUIDE


                                                                                                       www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                               BATS




several species are long-distance   nating sites to warmer roosts,     attack humans, and they live
migrators, traveling from as far    where they form nursery            only in Latin America. With
north as Canada to the Gulf         colonies. Birth occurs approxi-    the exception of three species
states or Mexico for the winter.    mately a month and a half to       of nectar-feeding bats that live
A few species can survive short-    two months later. Young bats       along the Mexican border of
term exposure to sub-freezing       grow rapidly, often learning to    Arizona and Texas, all bats in
temperatures, enabling them to      fly within three weeks. While      the United States and Canada
overwinter in crevices in cliff     they are being reared, males       are insectivorous.
faces or inside the outer walls
of buildings.                                                          Bats can be found roosting in a
                                                                           wide range of shelters,
                                                                               although they are best
Courtship and                                                                    known for living in
Reproduction                                                                       caves. Tropical
Most bats that live                                                                 species occupy an
in temperate                                                                        even wider range of
regions, such as the                                                                roost sites than
United States and                                                                  temperate species.
Canada, mate in the                                                                         For example,
fall just before entering                                                                  some make
hibernation. Ovulation                                                                    tent-like roosts
and fertilization (through                                                                by biting
sperm that have been dormant             Proportion of bat species                        through the
in the female reproductive tract        with each kind of bat diet.                       midribs of
                                                                       large leaves, and several species
                                                                       have suction discs on their
                                    and non-reproductive females       wings and feet that enable
                                    often segregate into separate      them to live in the slick-walled
    Young bats grow                 groups called bachelor colonies.   cavities formed by unfurling
     rapidly, often                                                    leaves, such as those of the
 learning to fly within             Although 70 percent of bats eat    banana plant. Others live in
                                    insects, many tropical species     animal burrows, flowers,
      three weeks.                  feed exclusively on fruit or       termite nests, and even in large
                                    nectar. A few are carnivorous,     tropical spider webs. Despite
                                    hunting small vertebrates such     the wide variety of roosts used
since the previous fall) occur in   as fish, frogs, mice, and birds.   by bats, many species have
the spring as females emerge        Despite their notoriety, there     adapted to living in roosts of
from hibernation. Pregnant          are only three species of          only one or a few types and
females then move from hiber-       vampire bats, they do not          cannot survive anywhere else.

                                                                             AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   3

www.nwf.org
BATS                                                                     NATIONAL WILDLIFE FEDERATION




      Why Should I Care                      species. Each of these
      about Bats?                            species of bats
      Worldwide, bats play essential         supports plants that
      roles in keeping populations of        are crucial to entire
      night-flying insects in balance.       ecosystems. Many
      Just one bat can catch hundreds        plants bloom at
      of insects in an hour, and large       night, using unique odors
                                             and special flower shapes
                                             that attract bats. The
                                             famous baobab tree of
             Seeds dropped                   the eastern African
                                             savannas is a good
         by bats can account                 example. Only bats can
         for up to 95 percent                approach from below in a
           of forest regrowth                manner likely to contact
                                             the flower’s reproductive organs
            on cleared land.                 and achieve pollination.
                                                                                  provide more than 450
                                             Wild varieties of many of the        economically important prod-
                                             world’s most economically            ucts, valued in the hundreds of
      colonies catch tons of insects         valuable crop plants also rely       millions of dollars annually.
      nightly, including beetle and          on bats for survival. Some of        The value of tropical bats in
      moth species that cost Amer-           the better-known commercial          reforestation alone is enor-
      ican farmers and foresters             products include fruits such as      mous. Seeds dropped by bats
      billions of dollars annually, not      bananas, breadfruit, avocados,       can account for up to 95
      to mention mosquitoes in our           dates, figs, peaches, and            percent of forest regrowth on
      backyards. In a single mid-            mangoes. Others include              cleared land. Performing this
      summer night, the 20 million           cloves, cashews, carob, balsa        essential role puts these bats
      free-tailed bats from Bracken          wood, and even tequila.              among the most important
      Cave in central Texas eat more                                              seed-dispersing animals of both
      than 200 tons of insects!              We already know that more            the Old and New World
                                             than 300 plant species in the        tropics.
      Throughout the tropics, the            Old World tropics alone rely         Excerpted with permission from “The World
      seed dispersal and pollination         on the pollinating and seed          of Bats’’ in America’s Neighborhood Bats
      activities of fruit- and nectar-       dispersal services of bats, and      by Merlin Tuttle, Copyright © 1988.
                                                                                  Courtesy of the University of Texas Press.
      eating bats are vital to the           additional bat-plant relation-
      survival of rain forests, with         ships are constantly being
      some bats acting as “keystone’’        discovered. These plants

4   | AMERICAN BATS: ONLINE ACTIVITY GUIDE


                                                                                                             www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                                    BATS




Featured Bats                          another gleaner that feeds           and to migrate. Unlike most
                                       mostly from the ground, unlike       bats, red bats often give birth to
                                       the majority of North American       twins and can have litters of up
Macrotus californicus,
                                       bats, which capture flying prey.     to five young, though three is
California leaf-nosed bat
                                       With its huge ears, it can detect    average. In the fall they perform
                      The Cali-
                                       insects simply by listening for      long-distance migrations, travel-
                      fornia leaf-
                                       footsteps, and it can respond        ling the same routes along the
                      nosed bat is
                                       accurately to a split-second         Atlantic seaboard as many small
                      the only bat
                                       sound from up to 16 feet away.       birds do.
                      in the United
                                       Its most common prey include
                      States to have                                        Euderma maculatum,
                                       crickets, beetles, grasshoppers,
both large ears and a nose leaf. It                                         spotted bat
                                       and even scorpions. Pallid bats
is also one of the most acrobatic                                                                  The
                                       roost in rock crevices, buildings,
fliers. This bat is a “gleaner,”                                                                   spotted bat
                                       and bridges in arid regions.
which means it is one of the few                                                                   is one of
                                       They are found from Mexico
U.S. bats that swoops down to                                                                      America’s
                                       and the southwestern United
capture insect prey straight from                                                                  most
                                       States north through Oregon,
the ground or plants rather than                                                                   striking
                                       Washington, and western
in flight. It typically hunts                                               mammals. Its long, silky fur is
                                       Canada.
within a few feet of the ground,                                            snow white beneath and jet
using its superior eyesight and        Lasiurus                             black above, with large white
hearing to search for insects such     borealis,                            spots on its shoulders and
as crickets, grasshoppers, beetles,    red bat                              rump. Its translucent pink ears,
and sphinx moths. California           Red bats                             nearly as long as its body, are
leaf-nosed bats do not hibernate,      are North                            the largest of any bat found in
nor do they migrate. They can          America’s                            the United States, and it has
be found in desert scrub habitats      most abundant “tree bats.”           pink wings to match! Initially
in the Colorado River valley in        They are found east of the           thought to be extremely rare,
southern California, Nevada,           Rocky Mountains from central         the spotted bat is now known to
and Arizona, and throughout            Canada to central Florida wher-      live from southwestern Canada,
western Mexico.                        ever there are trees. Red bats       south through the western
                                       roost in tree foliage, where their   United States to northern
Antrozous pallidus,
                                       rusty red color makes them look      Mexico. It is hard to find
pallid bat
                                       like dead leaves. They are           because it roosts high up in
                 The pallid
                                       perfectly camouflaged as they        cliff-face crevices and emerges to
                 bat has
                                       hang from a single foot with         feed late at night. Moths that
                 large ears,
                                       their furry tails curled around      are caught high above the
                 but no nose
                                       them. Red bats are solitary,         ground are its favorite prey.
                 leaf. It is
                                       coming together only to mate

                                                                                  AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   5

www.nwf.org
BATS                                                                     NATIONAL WILDLIFE FEDERATION


                                                                                                       ACTIVITY
      investigating bat adaptations                                                                          1
      Summary:                               Background                            piper fruits, but some flying
      Students investigate adaptations                                             foxes are generalists that eat
                                             Did you ever stop to think what       many sizes and kinds of fruit as
      that increase a bat’s chance of
                                             the world would be like if all        well as nectar.
      finding food and surviving in a
                                             animals suddenly tried to eat
      particular habitat.
                                             just one kind of food? What if        Some bats that catch insects
      Grade Level:                           they all decided to eat just grass?   have adaptations for hunting
        3-6                                  The answer is simple. They            certain kinds of prey or for
      Time:                                  soon would run out of grass and       capturing them in certain
                                             starve to death. Because animals      places. Free-tailed bats are like
        two activity periods
                                             eat a wide variety of foods, they     little jet airplanes, using their
      Subject:                               compete less, allowing many           long, narrow wings and far-
       science                               different species of animals to       reaching echolocation (sonar
      Skills:                                live in the same habitat and          systems) for chasing moths high
       observation, comparison,              maintain healthy ecosystems.          up in the sky. California leaf-
       hypothesizing                                                               nosed bats are more like heli-
      Learning Objectives:
                                             Most of the world’s bats eat          copters, relying on short, broad
        Students will be able to:            insects, and in areas with cold       wings to snatch crickets and
      ✔ List several different foods         winters, that is all they eat.        other insects from plants or the
        that bats eat.                       Many tropical bats eat fruit and      ground. They can use their
      ✔ Describe anatomical features         nectar, and a few are carnivores      extra-large eyes and ears to find
        that lend themselves to              that eat other animals, including     insects without even using
        particular bat diets.                rats and mice, small birds, frogs,    echolocation. Big brown bats
      ✔ Analyze bat features to accu-        lizards, or even fish. Only three     have especially strong jaws and
        rately predict their diets.          out of more than 1,000 species        teeth for chewing hard beetles.
                                             of bats drink blood.                  Pipistrelles have tiny teeth for
      Materials:                                                                   eating gnats and mosquitoes,
      ✔ Bats Adapt for Food cards            Each species of bat is adapted        and gray myotis have large feet
        (one set of six cards for each       for the food it eats. Some bats       for catching mayflies as they
        group)                               specialize in eating just one or a    hatch from a pond’s surface.
      ✔ Bat Food Clues at the end of         few kinds of food, but others
        the lesson, paper for students       are generalists that eat a wide       Most experienced bat scientists
        to write answers                     variety of foods. Long-nosed          can guess what a bat eats by
                                             bats have noses of varied lengths     looking closely at its adapta-
                                             and widths that match the sizes       tions. Long, narrow wings or
                                             and shapes of the flowers from        large tail membranes are usually
                                             which they drink nectar.              adaptations for catching insects,
                                             Carollia fruit bats are adapted to    but if the bat also has huge feet
                                             feeding almost entirely on small      and claws, it probably eats fish.

6   | AMERICAN BATS: ONLINE ACTIVITY GUIDE


                                                                                              www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                                      BATS




Just having large, but not overly     specialists, such as the huge-            fact cards among its members
large, feet would indicate a bat      footed fishing bats, or long-             so that every student can
that catches insects from pond        nosed nectar bats, live only in           become an expert on one of
surfaces. If a bat is large and has   tropical areas where climates             the bat eating habits. (Two
strong jaws, long canine teeth,                  and food sources are           students can share a single
and a large tail membrane, it is                   the most predictable.        card in groups having more
probably a carnivore, adapted                       Bats that live in           than six students.)
both to eating meat and to                           northern climates,
turning quickly while chasing                        where changes are        3. Ask students to take out a
prey. If it has strong jaws and                       frequent and              piece of paper and number it
long canine teeth, but has only                        unpredictable,           from one to twelve down the
a very small tail membrane, it is                   are all insect-eaters       left-hand side. Ask questions
a fruit bat that does not need to                   that seldom                 by reading the “Bat Food
chase prey, but is adapted for                               specialize on      Clues” to the class one at a
biting into tough-skinned fruit                                 any one         time.
to squeeze the juice out.                                      insect type.
Both insect-eating and                                       In these         4. Give each group a minute or
meat-eating bats always                         places, it is rare to find      two to discuss each given
have long tails or tail                   a bat with highly specialized         clue, and decide what type of
membranes, but                         wings, feet, or ears.                    bat it is (for example, insect-
meat-eaters are                                                                 eating, fruit-eating, etc.).
the largest and have the
strongest jaws.                       Preparation                             5. After all Bat Food Clues are
                                                                                given and students have
Special adaptations allow bats to     Make enough copies of the Bats            written their answers, go back
find and eat certain kinds of         Adapt for Food cards to                   through the ’ Bat Food Clues’
food with little or no competi-       distribute one complete set to            and lead the class in
tion from other species. This is      each group. You may want to               discussing the answers. Bonus
very successful as long as their      laminate the cards for durability.        questions after each Bat Food
unique food type is abundant,                                                   Clue can be used to stimulate
but such specialization is risky,                                               additional discussion. Each
because the kinds of prey, fruit,
                                      Procedure                                 group’s expert on each feeding
or flowers a bat eats might die       1. Divide your class into groups          type can be called upon to
out, leaving the bat to starve.         of six or more students each.           help lead discussions.
Animals that eat a variety of
foods can switch types if one         2. Distribute one complete set
disappears, but they cannot             of Food Cards to each group.
compete well with specialized           Tell the group to divide the
animals for any one food. Most

                                                                                   AMERICAN BATS: ONLINE ACTIVITY GUIDE   | 7

www.nwf.org
BATS                                                                            NATIONAL WILDLIFE FEDERATION




      Extensions                           Assessment
      ✔ Challenge students to investi-     ✔ Have students write letters to
        gate other animals that have         advertisers they select,
        food habits similar to bats.         explaining why they think a
        For example, some birds              bat would make the perfect
        snatch insects out of the air,       mascot for their product.
        while others pick them from          Students could apply their
        foliage. How do the habits and       knowledge of bat characteris-
        habitats of these birds compare      tics and make their own
        with those of bats? What about       connections to products.
        fruit-eating birds? Nectar-          For example, bats can fold
        eating birds? Fish-eating birds?     their wings around them to
        Are there any other animals          protect them from the
        that eat blood? Students can         elements, so
        present their results in poster      they’d make
        or report format.                    a great mascot
      ✔ There have been many other           for umbrellas or rain-
        bats featured on stamps from         coats. Or bats could adver-
        all countries and many other         tise insect repellent since they
        backyard wildlife species            eat mosquitoes. Or maybe
        featured on U.S. stamps. See         aircraft manufacturers, since
        how many you can find to             bats use radar. Sports teams?
        start your collection. Visit         Night vision goggles?
        the American Philatelic            ✔ Have students create a
        Society’s website,                   Halloween card with a bat on
        www.stamps.org/kids/kid_             it to mail to their grandpar-
        StampFun.htm, for more               ents or friends. Inside, they
        information on these stamps,         could include a “Did You
        stamp collecting, and                Know?” section listing inter-
        National Stamp Collecting            esting facts they learned
        Month (October, 2002).               about bats.

                                           Excerpted with permission from
                                           “Discover Bats!’’ a multi-media activity
                                           guide by Bat Conservation International,
                                           Copyright © 1998.




8   | WHERE IN THE WORLD IS THE ARCTIC?


                                                                                                        www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                                 BATS


                                                                                                 ACTIVITY
             teacher REFERENCE SHEET                                                                     1
                                      Bat Food Clues
1.WHO AM I?                                           4.WHO AM I?
Clue: My toes and claws are exceptionally long,       Clue: I fly fast over quiet water, searching for tiny
and the sides of my toes and claws are flat.          moving objects. My fur is oily.
Bonus Questions:                                      Bonus Questions:
What is the advantage of having long toes and         What is the advantage of flying over calm water?
claws? What is the advantage of having flattened      What is the advantage of oily fur?
toes and claws?                                       Answers:
Answers:                                              4. I am a fish-eating bat. To easily detect tiny fin
1. I am a fish-eating bat. Can reach into water       tips using echolocation. To shed water, keep bat
without submerging body. To glide easily              fur dry, and avoid getting cold.
through water.
                                                      5.WHO AM I?
2.WHO AM I?                                           Clue: My short, broad wings and my large tail
Clue: My legs are extra strong and my kidneys         membrane allow me to dart in and out of
work quickly so I can eliminate water as fast as      branches.
I eat.                                                Bonus Questions:
Bonus Questions:                                      What is the advantage of being able to dart in and
How do fast-working kidneys help a blood-eating       out of branches? What is the advantage of being able
bat? What is the advantage of extra strong legs?      to catch insects on the ground or in bushes?
Answers:                                              Answers:
2. I am a blood-eating bat.To get rid of the water,   5. I am an insect-eating bat that catches prey on
so the bat won't be too heavy to fly. To walk on      the ground or on plants. To avoid obstacles and
the ground while stalking large prey or to jump       catch prey. To avoid competing for food with
away quickly if the prey wakes.                       other bats that feed in the open.

3.WHO AM I?                                           6.WHO AM I?
Clue: I am a large, strong bat with large ears and    Clue: I have sharp teeth and strong jaws that can
broad wings.                                          cut or crush big meals, I also have a big tail
Bonus Questions:                                      membrane.
Why does a carnivorous bat need big ears? What is     Bonus Questions:
the advantage of having broad wings?                  What is the advantage of having sharp teeth and
Answers:                                              strong jaws? What is the advantage of a big tail
3. I am a meat-eating bat. To listen to and find      membrane?
prey. To better lift heavy prey.                      Answers:
                                                      6. I am a meat-eating bat. To quckily kill and cut
                                                      up large prey and break bones. To maneuver
                                                      better when chasing prey.

                                                                               AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   9
BATS                                                                 NATIONAL WILDLIFE FEDERATION


                                                                                                   ACTIVITY
                       teacher REFERENCE SHEET                                                           1
                                              Bat Food Clues
      7.WHO AM I?                                            10.WHO AM I?
      Clue: My teeth are small, except for my front          Clue: My tongue is long and my wings allow me
      teeth, which are sharp and can cut like a razor.       to hover.
      My nose can detect heat.                               Bonus Questions:
      Bonus Questions:                                       Why does this bat need to hover in flight? What is
      Why are razor-sharp teeth important? What is the       the value of a long tongue?
      advantage of a heat-sensitive nose?                    Answers:
      Answers:                                               10. I am a nectar-eating bat. To visit flowers
      7. I am a blood-eating bat. To make quick,             rapidly without landing, therefore staying safe
      painless cuts. To find areas on prey that are rich     from predators. To reach deep in to flowers and
      in blood.                                              lap up nectar.

      8.WHO AM I?                                            11.WHO AM I?
      Clue: I have sophisticated echolocation abilities;     Clue: My teeth are flat and my jaws are strong so
      long, narrow wings; and small ears.                    I can squeeze juice from my food.
      Bonus Questions:                                       Bonus Questions:
      Why do bats have echolocation as well as good          Why does this bat discard as much pulp as possible?
      eyesight? What advantages do long, narrow wings        What is the advantage of having flat teeth?
      have?                                                  Answers:
      Answers:                                               11. I am a fruit-eating bat. To get the most nutri-
      8. I am an insect-eating bat that catches prey in      tious part of the fruit without carrying extra
      the air. To pursue prey on the darkest nights and      weight. To squeeze out juice without cutting up
      to roost in deep, dark caves where they are safe       the pulp.
      from predators. To chase fast-flying insects and
      travel far.                                            12.WHO AM I?
                                                             Clue: My nose is long and narrow and my teeth
      9.WHO AM I?                                            are very small.
      Clue: I can smell my food from a long way off          Bonus Questions:
      and I don't have to echolocate.                        What is the advantage of small teeth? What is the
      Bonus Questions:                                       advantage of a long, narrow nose?
      Why do many of these bats not need to echolocate?      Answers:
      Why is a good sense of smell important?                12. I am a nectar-eating bat. Nectar doesn't need
      Answers:                                               to be chewed, so heavy teeth aren't needed. To
      9. I am a fruit-eating bat. They don't live in caves   reach deep into long, narrow flowers.
      and echolocaiton isn't necessary for finding fruit.
      To smell ripe fruits, because color can't be seen in
      the dark.

10   | AMERICAN BATS: ONLINE ACTIVITY GUIDE


                                                                                           www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                                       BATS


                                                                                                        ACTIVITY
                                                            WORKSHEET                                           1



                   Bats Adapt for Food Cards

Meat-Eating Bat                                          Fish-Eating Bat
Carnivore (CAR-nih-vore)                                 Piscivore (PISK-kah-vore)




                                                         Body: Larger than average size; long legs and
                                                         enormous feet; long, sharp, hooked claws; toes flat
                                                         for knifing through water; oily fur that sheds
                                                         water to keep dry.
Body: Large size for capturing and carrying
off other animals.                                       Head: Strong jaws for killing and chewing fish;
                                                         special echolocation ability to detect ripples or
Head: Strong jaws for killing prey; large ears help      fins on water surface.
identify and locate a mouse's footsteps or the call of
a frog.                                                  Wings: Narrow and long for flying fast over water.

Wings: Broad, with up to three-foot wingspan; large      Teeth: Sharp (similar to insectivores), for chopping
tail membrane for maneuvering rapidly.                   and grinding fish.

Teeth: Sharp molars and long canines for chopping
flesh and crushing bones.




                                                                                     AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   11

 www.nwf.org
BATS                                                                       NATIONAL WILDLIFE FEDERATION


                                                                                                           ACTIVITY
                                                                    WORKSHEET                                     1


                           Bats Adapt for Food Cards


     Blood-Eating Bat                                             Insect-Eating Bat
     Sanguivore (SAN-gua-vore)                                    Insectivore (in-SECK-tih-vore)




     Body: Strong legs for walking on ground or climbing          Body: Many body shapes, all small.
     on prey and for jumping into flight when full of blood.
                                                                  Head: Many kinds of faces and ears that aid
     Head: Heat-sensitive nose helps find blood vessels           echolocation and hearing while hunting for
     closest to prey’s skin surface; short pug muzzle makes       insects.
     biting easier.
                                                                  Wings: Insectivores that catch insects on the
     Wings: Broad and short; strong enough to carry               ground or on plants (gleaning insectivores) have
     heavy food loads with a full stomach.                        broad, short wings and large tail membranes for
     Teeth: Tiny molars; incisors forming large, razor-sharp
                                                                  darting in and out of branches or hovering close
     blades for slicing prey's skin; grooved tongue for lapping
                                                                  to the ground. Insectivores that chase insects in
     blood; special saliva keeps blood from clotting so bat
                                                                  the air while flying (aerial insectivores) have longer,
     can keep drinking.
                                                                  narrower wings and often have smaller ears for
                                                                  streamlining; some use their tail membrane to help
     Special: Kidneys allow bat to urinate as fast as it          catch prey.
     eats to lighten the load before flying home
                                                                  Teeth: Sharp, for grinding and chopping tough
                                                                  insect bodies.




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                                                                                                   www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                                           BATS


                                                                                                             ACTIVITY
                                                                   WORKSHEET                                         1


                      Bats Adapt for Food Cards


Fruit-Eating Bat                                                Nectar-Eating Bat
Frugivore (FROO-gah-vore)                                       Nectarivore (NECT-ter-ah-vore)




Body: Often large with bright colors; most have no
tail and little or no tail membrane.
                                                                Body: Small body
Head: Medium to short snouts; keen nose for
smelling ripe fruit; strong jaws for biting fruit; large eyes   Head: Long, slender snout fits perfectly into flowers;
with excellent vision; many don't echolocate.                   long, delicate jaw; grooved lower lip and rough,
                                                                scaly tongue to catch nectar; excellent vision; and
Wings: Wide and short for carrying heavy fruits; small          sense of smell.
tail membrane.
                                                                Wings: Short and wide with long wingtips for
Teeth: Wide, flat grinding teeth and strong jaws for            hovering above flowers.
crushing fruit-separates juice and spits out pulp; some
have grooved teeth to more easily collect juice.                Teeth: Small; not used much for chewing due to
                                                                liquid diet.




                                                                                          AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   13

  www.nwf.org
BATS                                                                   NATIONAL WILDLIFE FEDERATION


                                                                                                    ACTIVITY
      bats:maligned or malicious?                                                                         2
      Summary:                                Background                         drink blood? Only three out of
      Students explore their views                                               the more than 1,000 species of
                                              Humans tend to find some           bats are actually ’ vampire
      of a threatened bat and
                                              animals naturally compelling,      bats,’ and these species all live
      present their findings.
                                              while others are not so            only in Latin America.
      Grade Levels:                           appealing. For example, many       Virtually all U.S. bats are
       3-8; K-2                               of us would much rather see        insect-eaters (There are a few
      Time:                                   moose, loons, and rabbits on a     bats in the Southwest that live
       Two or more class periods,             jaunt in the woods than snakes,    on nectar and a few species eat
        depending on the presentations.       spiders, and bats. Because of      fish). Do bats carry disease?
                                              the way these animals have         Like all animals, bats can carry
       Subjects:                              been portrayed in myths, folk-
        science, reading, presentation,                                          diseases. Yet public-health
                                              lore, books, and movies, many      worries about bats are exagger-
        social studies
                                              of us are biased towards cute,     ated. The probability of
       Skills:                                furry animals, even though all     catching a disease from a bat is
        analysis, application, classifica-    species play important roles in    far less than the risk of being
        tion, comparison, description,        their ecosystems. Although         struck by lightning. For anyone
        evaluation, research, synthesis       some of our responses to           who simply leaves bats alone,
                                              certain wildlife help protect us   and never attempts to handle
      Learning Objectives:
                                              from danger, logic does not        them, they are invaluable allies
       Students will be able to:
                                              always guide our beliefs and       that need not be feared.
      ✔ Describe several views                behaviors. Furthermore, we
        people hold about bats.                                                  However, as with other wild
                                              tend to overlook the benefits      animals, those that can be
      ✔ Identify misconceptions
                                              some species offer humans and      caught are most likely to be
        about a threatened species.
                                              other wildlife. For example,       sick, and, because these may
      ✔ Reflect on changes in their
                                              spiders and bats help control ’    bite in self-defense, and can
        attitudes about wildlife.
                                              nuisance’ insects and provide      transmit potentially dangerous
      ✔ Share natural history and
                                              food for other animals. Many       diseases, they never should be
        conservation knowledge
        about bats.
                                              snakes control some rodent         handled.
                                              populations. Yet, many of our
      Materials:                              beliefs about animals are not      Most of our fears about wildlife
      ✔ Copies of “Threatened:The             based on scientific facts.         are generated from some level
        Indiana Bat” readings                                                    of primal fear based simply on
        (whichever one is more                Beneficial Bats
                                                                                 the unknown. Bats are small,
        appropriate for your                  Bats often suffer from negative,
                                                                                 mysterious creatures of the
        students’ reading level). Each        Halloween-like associations.
        student will need one                                                    night that spend time in caves
                                              Many people think of Dracula,
        reading.                                                                 and other dark places. Interest-
                                              blood-sucking fangs, disease, or
      ✔ Craft materials (optional)                                               ingly, in the tropics, where
                                              bats tangled in the hair. Are
      ✔ Props (optional)                                                         many of the bats are much
                                              these perceptions fair? Do bats
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NATIONAL WILDLIFE FEDERATION                                                                                  BATS




larger and more easily seen in      Procedure                             two versions are provided; pick
their habitats, they are not                                              the version with the reading
feared.                             1. Tell your students that they       level most appropriate for your
                                       will be learning about bats.       students.) Another option is to
Due to killing stemming from           For fun, ask them to practice      have students conduct the
carelessness or the fear of bats,      making a special sound             research themselves. Mention
and continued habitat loss, bat        made by a bat called the           that Indiana bats are threat-
populations have suffered. Bats        “body buzz.’’ The body             ened species in the United
reproduce slowly, typically            buzz is a low sound bats           States. There are also many
rearing only one young per             make when they are resting         other species of bats
year, making population                and seem contented before          throughout North America.
recovery a slow process. Instead       they go to sleep. The bat’s        5. Give students time to read
of spreading myths, we should          whole body vibrates.                  about bats.
consider bats’ real roles in        2. What do your students              6. If possible, head outside to
ecosystems. Bats are important         know about bats, important            evaluate your school
to the natural world. Feeding          animals throughout North              grounds or a local area as
at night, they catch billions of       America? Instruct students            habitat for bats. Is there a
insects. Nature’s bug-zappers          to create a concept map for           forest nearby? Are there any
are wonderfully efficient,             bats. A concept map is a              caves or streamside trees
catching as many as 600                diagram representing                  where bats could roost and
mosquitoes an hour. Bats also          thoughts and ideas associ-            feed? Are there trees with
eat a number of crop pests,            ated with a certain subject,          peeling bark for bats to hide
helping farmers and reducing           in this case a bat. (See              under?
the need for harmful pesticides.       diagram for an example,            7. Back in the classroom,
Many tropical bats feed on             done for wolves.) Encourage            divide the class into small
fruit or nectar and in the             students to record their own           groups of two to three
process pollinate plants and           ideas and then share with              students. Explain that each
disperse seeds, helping to             their group; there are no              group will be responsible
regenerate the forest. Any             right or wrong answers.                for designing and sharing a
number of familiar plants           3. Review the concept maps as             presentation about bats.
depend on bats, including figs,         a class and discuss any           8. Give students the following
bananas, avocados, cloves, and          commonalities. How are               guidelines for their presen-
cashews.                                bats generally perceived by the      tations. The presentations
                                        class? In a positive light? A        might be in the form of a
                                        negative light? Why?                 newscast (perhaps inter-
                                    4. Distribute copies of ’                viewing a biologist), skit,
                                        Threatened: The Indiana              radio show, documentary,
                                        Bat’ to each student. (Note:         song, poster, mural,


                                                                               AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   15

www.nwf.org
BATS                                                                    NATIONAL WILDLIFE FEDERATION




          diorama, or other medium.               additional research mate-       Modifications for
          The final presentation                  rials available, particularly   Younger Students
          should last roughly five                on bat pollination if           (Grades K-2)
          minutes. In addition to                 possible. Also, consider
          being fun and creative, the             having props available, or      For younger students, intro-
          presentations should also               put students in charge of       duce the book Stellaluna, by
          convey key, accurate infor-             finding what they need for      Janell Cannon. This delightful
          mation about bats. One                  their presentations. If time    story portrays bats in a posi-
          important role of the pres-             allows, this can develop        tive light, following the antics
          entation is to educate                  into a more involved            of the young bat Stellaluna as
          people about myths they                 project taking several class    she spends time with a family
          may have heard about bats.              periods.                        of birds and discovers her true
          For example, are bats really        11. Presentation time! Invite       identity.
          blood suckers? What kinds of            student groups to deliver
          benefits do bats provide to             their presentations to the
                                                                                  Modifications for
          people and ecosystems?                  rest of the class. After each
                                                                                  (Grades 5-8)
      9. Let students know they will              presentation, review the
          be evaluated on their                   criteria listed on the board    Older students can research
          presentations. As a class,              as a class and evaluate the     different species of bats on
          develop a list of criteria for          presentation. Remind            their own, instead of relying on
          judging the presentations.              students of the difference      the readings provided. They
          Record the ideas on the                 between constructive and        could conduct comparisons
          board. Encourage students               destructive criticism.          among different kinds of bats,
          to think about what they                Encourage students to           their diets, habitat require-
          believe makes a good                    begin with positive             ments, and what plants they
          presentation. For example:              comments and add sugges-        may pollinate.
        Did the presentation demon-               tions for improvement.
        strate how bats really behave?        12. To conclude, have students
        Did it show us why bats are               develop a second concept        Extensions
        important? Were the facts                 map for bats. Then have
        correct? Was the information              students compare their pre-     ✔ Have students deliver their
        clearly presented? Was the pres-          and post-concept maps to          presentations for other audi-
        entation interesting?                     reflect on their new under-       ences. For example, invite
        Creative? Did it change the               standing of these animals.        another class, or parents. Or
        way classmates think about                Discuss some of their             share the presentations with a
        bats?                                     results.                          parent or teacher association.
      10. Give students time to work                                              ✔ Do bats live in your region? If
           in their groups to prepare                                               so, which ones? Build (or
           their presentations. Have                                                order) bat boxes to make a

16   | AMERICAN BATS: ONLINE ACTIVITY GUIDE


                                                                                                      www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                             BATS




  Schoolyard Habitats® site         Compare the views that             stories, art, phrases, and folk
  for bats. Bats are declining      various cultures, including        tales. Consider a trip to an
  in part due to a loss of          Native American nations,           art or natural history
  roosting sites. Providing a       have toward eagles and other       museum to search for infor-
  place for bats to roost and       wildlife species. Which            mation on bats. As follow-
  raise their young can be an       wildlife species do they like      up, students can investigate
  exciting project to benefit       and dislike? Why?                  whether the portrayal is fair
  bats, and a great lead-in to    ✔ Examined up close, bats            given the animal’s true
  the Schoolyard Habitats           have beautifully complicated       behavior.
  project. For details, and         faces and bodies. As a class     ✔ For young students,
  more information about bats       project, feature a bat beauty      encourage them to list as
  and bat research projects,        contest. Students can find         many adjectives as they can
  consult Bat Conservation          pictures of bats and create        think of that begin with the
  International’s (BCI) website     detailed drawings of their         letters ‘b’ to describe bats.
  at www.batcon.org. BCI is a       features.                          Which of the ‘b’ adjectives
  nonprofit organization dedi-    ✔ Think of common phrases            accurately describe the bat?
  cated to bat conservation,        that refer to bats. For            Do people ever use some of the
  research, and public educa-       example, “blind as a bat’’         other adjectives to describe the
  tion. BCI sells ready-made        and “going batty.” Can             animals? Which ones? Why?
  bat houses and offers             you think of others? Have          For example, are bats blind
  detailed instructions on how      students investigate the           and bold or beautiful and
  to build inexpensive bat          origin and meaning of these        beneficial?
  houses. See pages 20-23 of        phrases, as well as whether      ✔ Pre- and post-concept maps
  this guide for a lesson plan      they are fair statements based     described in the lesson offer
  using these instructions. The     on bats’ true behaviors and        a great assessment tool.
  estimated cost of materials       characteristics.
  to build a BCI bat house
  that can host over 100 bats
  is less than $20.               Assessment
✔ What other animals suffer
  from human misconceptions?      ✔ Compare the perceptions
  Investigate and find out.         various cultures have
  One example is raptors, such      regarding bats today and
  as eagles and hawks.              historically. Students might
  Although they are protected       divide into groups (perhaps
  by law, magnificent animals       by region of the world or
  such as eagles were once shot     era) to investigate how these
  as pests and for sport.           bats are portrayed in myths,


                                                                          AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   17

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BATS                                                                   NATIONAL WILDLIFE FEDERATION


                                                                                                      ACTIVITY
                                                                  WORKSHEET                                 2

                                                   Indiana Bat

      Is a bat a mouse with wings? No, bats are not            caves with a temperature of
      rodents. Instead, bats belong to their own special       37-43° F. The caves were once
      group of mammals, Chiroptera.There are more              filled with bats, but now many of the bats are gone.
      than 1,000 different kinds or species, of bats in the    For example, one cave in Kentucky had at least
      world. Forty-five different species live in the          100,000 bats in the 1960s, but only 250 by 1987.
      United States.
                                                               Why are bats disappearing? Some people like to
      Some bats eat nectar, fruit, or even fish, but almost    explore caves, which may disturb bats while they
      all of the bats in the United States eat insects. In     are hibernating. If bats wake up from hibernation
      fact, they eat lots and lots of insects. One bat can     and have to move around, they will use too much
      eat more than 600 flying insects such as mosqui-         energy and not have enough to survive the winter.
      toes in one hour! They find their food by “echolo-       Other times, people build cave gates that lock the
      cation.’’ They make sounds (which humans can't           bats out of their winter homes. Some gates trap air
      hear) that bounce off other objects and return to        in the caves and make it too hot for the bats.
      their ears.These sounds help them to fly safely and      Humans are also changing forests and causing
      locate their prey.                                       problems for Indiana bats in their summer habitat.
                                                               Bats like to feed and roost in trees near water-
      Many people don’t like bats. People think bats can       ways. But in some areas, these important trees are
      get tangled in their hair or spread disease. In fact,    cleared by logging, driving away the bats. In other
      bats can see and are very good at finding their way      places, dams have been constructed, removing the
      around in the dark. A bat can “see” something as         trees near the waterways that bats prefer.
      fine as a human hair using echolocation.The chance
      of a bat giving someone a disease is less than the       But there is hope! In some places, people have
      chance of being struck by lightning. In fact, bats are   built bat-friendly gates. For example, in Tennessee,
      very useful to people. They eat insects that might       people built a special gate that weighs 23 tons.The
      damage farmers' plants and help                          gate lets bats into their natural habitat but keeps
      pollinate our crops.                                     people out of this important place for bats.

      At least nine bat species in the United States are        Many other animals also like to live and feed in
      endangered. Many bats are disappearing because           forests next to streams. So, if we protect trees
      people misunderstand them or try to get rid of           next to waterways, we’re protecting habitat for
      them, and they are losing their habitat. Bats suffer     bats and other animals.
      because we disturb the caves and forests they
      need. The Indiana Bat is one species in trouble.         What do you think about saving bats?
      This bat lives in parts of Maine,Vermont, New
      Hampshire, and New York, as well as states farther
      south and west. In winter, Indiana bats hibernate in



18   | AMERICAN BATS: ONLINE ACTIVITY GUIDE


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NATIONAL WILDLIFE FEDERATION                                                                                      BATS


                                                                                                      ACTIVITY
                                                              WORKSHEET                                       2

                                               Indiana Bat

Bats look like mice with wings, but they are not           on the Endangered Species List.The story of the
rodents. In fact, they belong to their own group           Indiana bat shows the problems faced by many of
within the class of mammals, and this group is             the 45 bat species in the United States.
among mammals' most successful. Of the approxi-            The Indiana bat is roughly the size of a house
mately 4,000 species of mammals, nearly a quarter-         sparrow, with gray-brown fur and pink to cinnamon
over 1,000 species-are bats.                               underparts. It eats insects, which females and juve-
                                                           niles snatch from the air over streams and trees.
A few bats feed on nectar or fruit, but most feed on       Males look for food at treetop level over dense
insects.They have large appetites.A single bat, flying     woods.The species can be found in the Midwest
through the night sky in pursuit of prey, may eat more     and eastern United States, from the western
than 600 flying insects in one hour.A bat that lives for   Ozarks of Oklahoma north to southern Wisconsin,
30 years may consume several million insects.              east to Vermont, and south to Florida.

Bats are high on the list of animals that are victims      In winter, the Indiana bat hibernates in limestone
of human myths and misunderstandings.Well-                 caves, especially caves in which temperatures
adapted to flying at night, bats can navigate in total     average 37° to 43° F with a relative humidity aver-
darkness across a room crisscrossed with strings.          aging 74 percent. In summer, Indiana bats live in
They do it by sending out sounds that bounce off           hilly countryside, along riverbanks, and on low
of objects and return to the bats' ears, which read        plains.The bats roost under the bark of dead and
them like radar. One myth, that bats generally carry       dying trees in these areas.
the disease rabies, is also false. Only one-half of
one percent (0.5%) of healthy-looking bats exam-           The Indiana bat population has been falling since at
ined in one U.S. study was found to be rapid.              least the 1960s. For example, in the 1960s,
                                                           Kentucky had five caves in which more than
On the other hand, bats are useful to people. Some         150,000 Indiana bats hibernated. By 1988, the total
bat species are pollinators of useful plants, eating       winter population in the five caves was only
nectar from blossoms and carrying pollen from              49,000.Today, nearly 90 percent of all Indiana bats
flower to flower.Agaves, plants of the desert              hibernate in only seven caves.
Southwest used in making fiber ropes and other
products, are bat-pollinated. Bats not only help           One of the main reasons that bat
people by eating huge numbers of insects, but bat          numbers are falling is the loss of
studies have been important in the development of          cave habitat, especially caves used for
low-temperature surgery, vaccines, and navigational        hibernation. Some caves have been made into
aids for the blind.                                        tourist attractions. Others have been destroyed by
                                                           vandals or disturbed by spelunkers (people who
In recent decades, several U.S. bat species have had       explore caves). Since 1950, these and other causes
population declines. In 1973, the Indiana bat              have eliminated and degraded major winter bat
became the first of nine U.S. bat species to appear        colonies of West Virginia, Indiana, and Illinois.

                                                                                   AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   19

www.nwf.org
BATS                                                                              NATIONAL WILDLIFE FEDERATION


                                                                                                                 ACTIVITY
      build a bat house!                                                                                               3
      Summary:                                ✔ One pint water-based primer,                Background
      Students build a bat house for            exterior-grade
      their Backyard Wildlife                 ✔ One quart flat water-based
                                                paint or stain, exterior-grade*             Why Build a Bat House?
      HabitatTM or Schoolyard                                                               America’s bats are an invaluable
      Habitats® Site.                         ✔ One tube paintable latex
                                                caulk                                       natural resource. Yet, due to
      Grade Level:                            ✔ 1'' x 3'' x 28'' board for roof             decades of unwarranted human
        2-8                                   ✔ 6 to 10 7/8'' roofing nails
                                                                                            fear and habitat loss, bats are in
      Time:                                                                                 alarming decline. The loss of bats
                                              * Years of research have shown that bat
                                                                                            contributes to growing demands
        2 hours (plus painting and
                                              houses are far more successful at             for toxic pesticides that increas-
        installation time)                    attracting bats if they are painted or        ingly threaten our personal and
      Subject:                                stained. Painting helps maintain the
                                              proper internal temperature for bats          environmental health.
       science, art, math                     and also increases the life span of the
                                              bat house.Appropriate color depends
      Skills:                                 upon geographic location and amount of
                                                                                            The most important goal is to
       construction, description,             sun exposure.Adjust to darker colors          preserve America’s most abun-
                                              for less sun. Use exterior-quality, water-    dant bats in sufficient numbers
       analysis                               based stain or latex paint, and choose
      Learning Objectives:                    flat paint rather than gloss or semi-gloss.   to maintain nature’s balance. If
        Students will be able to:
                                                                                            you live in areas of bat habitats,
                                                                                            putting up a bat house near your
      ✔ Identify reasons for building a       Recommended Tools
                                                                                            home or school can help provide
        bat house.                            ✔ table saw (for adults only) or
                                                                                            a critical safe haven for bats. Bats
      ✔ Demonstrate a method for                handsaw, caulking gun, vari-
        building a bat house.                   able speed reversing drill,                 make good neighbors; as
      ✔ Identify key criteria for               paintbrushes, Phillips bit for              primary predators of night-
        successful bat houses.                  drill, tape measure or yard-                flying insects, they play a vital
                                                stick, scissors (optional),                 role in maintaining the balance
      Materials:                                staple gun (optional)                       of nature. People with occupied
      (for each house)                                                                      bat houses on their properties
      ✔ 1/4 sheet ( 2'' x 4'' ) 1/2''          Bat House Color                              benefit from having fewer lawn
         CDX (outdoor grade)                   Recommendations Based                        and garden pests, and they enjoy
                                               on Average Daily High
         plywood                               Temperatures in July                         learning about bats and sharing
      ✔ One piece 1' x 2' (3/4'' x                                                          their knowledge with friends
                                               Less than 85˚ F = black
         13/4'' finished) x 8'' pine                                                        and neighbors. Few efforts on
         (furring strip)                       85˚ to 95˚ F = dark brown or other           behalf of wildlife are more fun
      ✔ 20 to 30 11/4'' coated deck            dark shade                                   or rewarding than helping bats.
         or exterior-grade Phillips            95˚ to 100˚ F = medium brown or
         screws                                other medium shade                           Note: Some teachers opt to buy
      ✔ One pint black, water-based                                                         ready-to-hang bat houses and
                                               100˚ F or greater = light tan or other
         stain, exterior-grade                 light shade                                  concentrate the lesson instead on
                                                                                            selecting a good site for mounting
20   | AMERICAN BATS: ONLINE ACTIVITY GUIDE


                                                                                                        www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                                      BATS




it. Superior quality bat houses are      neighborhood bats use your              and disturbance. If you live
available through the Bat Conser-        outdoor wildlife habitat, and           in an area bats use for habitat
vation International catalogue at        not your house!                         (check www.enature.com if
1-800-538-BATS in the U.S.                                                       you need to check), what
and Canada.                           Preparation                                could you do to help them?
                                                                                 One idea is to build a bat
Looking for additional or other       1. Measure and cut plywood                 house to provide additional
ways to provide better bat               into three pieces for each              habitat for them.
habitat? You can try these other         group: 26 1/2'' x 24'' for the       3. Divide your students into
simple actions to attract bats to        back board, 16 1/2'' x 24''             small groups to make bat
your Backyard Wildlife Habitat           for the front top, 5'' x 24''           houses, or make one
or Schoolyard Habitats site, by          for the front bottom.                   together as a large group.
providing the insects to eat,         2. Pre-drill 11 screw holes on             Make sure to use all appro-
water to drink, and places to            the back board, four on each            priate safely considerations,
hide that bats need for their            side and three across the top.          equipment, and adult super-
habitat.                              3. Pre-drill nine screw-holes on           vision for use of tools.
✔ Got an anti-bug zapper in              the front top board, three on        4. Roughen inside of back-
   your yard? You might want             each side and three across              board and landing area by
   to think about getting rid of         the top.                                cutting horizontal grooves
   it! Zappers are useless on         4. Pre-drill four screw holes on           with sharp object or saw.
   most biting insects and only          the front bottom board, two             Space grooves about 1/2"
   kill light-attracted moths,           on each side.                           apart, cutting 1/32" to 1/16"
   which are good food for bats.                                                 deep. Ask students, why you
✔ Trees and shrubs, even dead                                                    might want to do this? (The
   ones left standing, are excel-     Procedure                                  bats need such texture for
   lent hideouts for bats—and                                                    climbing and roosting.)
                                      1. Ask students, What do you
   birds.
                                         know about bats? Make a list
✔ Bats need water to drink. If           on the board. What would you
   you build a mini-pond,                like to know? Make a parallel
   you’ll also attract frogs and         list. Discuss some of the
   many other water creatures.           major characteristics of bats
   Find out how to do this on            (from background) with the
   NWF’s website:                        students, and refer back to
   www.nwf.org/backyard-                 their list for later explorations.
   wildlifehabitat/ or at a           2. Explain to students that
   garden center or library.             many bats are highly endan-
✔ Close up any holes in your             gered (What does that mean?)
   attic to ensure that your             due to habitat destruction

                                                                                   AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   21

www.nwf.org
BATS                                                                          NATIONAL WILDLIFE FEDERATION




      5. Apply two coats of black,                 Start with 24'' piece at top.                                      BACK

         water-based stain to interior             Roosting chamber will be
         surfaces. Do not use paint,               3/4'' wide (front to back).

         as it will fill grooves, making        8. Attach front to furring
         them unusable.                            strips, top piece first (don’t
      6. Measure and cut furring                   forget to caulk wherever                     FRONT TOP

         strips into one 24'' and two              pieces meet along both top
         20 1/4'' pieces.                          and sides). Leave 1/2'' vent
      7. Attach furring strips (3/4''              space between top and
         wide) to back, caulking first.            bottom front pieces.
                                                                                         FRONT BOTTOM

                                                                                                                  FURRING STRIPS



                                         KEY CRITERIA FOR SUCCESSFUL BAT HOUSES
         DESIGN: - All bat houses should be at least 2 feet         metal siding are seldom used.Wood or stone build-
         tall and 14 inches or more wide, with a landing area       ings with good solar exposure are excellent
         extending below the entrance at least 3 to 6 inches.       choices, and locations under the eaves often have
         • Most houses have one to four roosting cham-              been successful. Mounting two bat houses back to
           bers—the more the better. Roost partitions               back on poles is ideal. Place houses 3/4 inch apart
           should be carefully spaced 3/4 to 1 inch apart.          and cover both with a galvanized metal roof to
         • All partitions and landing areas should be rough-        protect the center roosting space from rain.
           ened.Wood surfaces can be scratched or grooved           All bat houses should be mounted at least 12 feet
           horizontally, at roughly 3-inch intervals, or            above ground; 15 to 20 feet is better.
           covered with durable plastic mesh (1/8 inch or 1/4
           inch mesh, available from companies such as              PROTECTION FROM PREDATORS: Houses
           Internet, Inc. at 1-800-328-8456).                       mounted on sides of buildings or on metal poles
         • Include vents 6 inches from the bottom of all            provide the best protection from predators.
           houses to be used where average July high
           temperatures are 85º F or above. Front vents are         AVOIDING UNINVITED GUESTS: Wasps can
           as long as a house is wide; side vents are 6 inches      invade bat boxes before bats fully occupy it. Use of
           tall by 1/2 inch wide.                                   3/4-inch roosting spaces reduces wasp use. If nests
                                                                    accumulate, they should be removed in late winter
         HABITAT: Most nursery colonies of bats choose              or early spring before either wasps or bats return.
         roosts within 1/4 mile of water, preferably a stream,      Open-bottom houses greatly reduce problems with
         river, or lake. Greatest bat house success has been        birds, mice, squirrels or parasites, and guano (bat
         achieved in areas of diverse habitat (with lots of         droppings) does not accumulate inside.
         different species present). Bat houses are most
         likely to succeed in regions where bats are already        TIMING: Bat houses can be installed at any time of
         attempting to live in buildings.                           the year, but are more likely to be used during their
                                                                    first summer if installed before the bats return in
         MOUNTING: Bat houses should be mounted on                  spring.
         poles or buildings. Houses mounted on trees or


22   | AMERICAN BATS: ONLINE ACTIVITY GUIDE


                                                                                                             www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                         BATS




9. Caulk around all outside             contributes to successful
  joints to further seal roosting       bat habitat.
  chamber.                         13. Install your bat house and
10. Attach a 1'' x 3'' x 28''          observe it! What do you
    board to the top as a roof, if     discover?
    desired (optional, but highly
    recommended).                   Assessment
11. Paint or stain exterior three
    times (use primer for first     ✔ Write a letter to Ranger Rick
    coat).                            Raccoon at the National
12. Where will you put up your        Wildlife Federation about
    new bat house? Ask students       your bat house, explaining
    to identify criteria for good     what you learned about
    placement, based on what          building and planning your
    they know about bats.             bat house. Ask any bat-
    Consider:                         related questions you have.
    • permission to put it up,        Be sure to use Bat Stamps on
       close to a pond, stream, or    your envelope!
       lake where bats feed and     ✔ Design a brochure showing
       drink,                         how to build and where to
   • diverse habitat that             place a bat house.
      supplies a variety of
      insects,
   • lots of sunshine to warm the
      house (at least six hours
      daily in hot climates, more
      in cool locations, so young
      stay warm and grow fast),
   • facing east, west, or south
      (avoiding west in exception-
      ally hot climates)
   • on a pole or the side of a
      building),
   • about 12-15 feet above
     ground,
   • in an open area at least 20
      feet away from nearest
      trees or other obstacles. For
      each of these factors, ask
      students to consider how it
                                                                      AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   23

www.nwf.org
BATS                                                                    NATIONAL WILDLIFE FEDERATION




      What You Can Do to Help Bats
      You do not need to travel far or          between the wall and the            www.batcon.org and click
      have a degree in biology to help          opening. The bat then can           on "Reading Lists" or call
      bats. You can make a big differ-          be released outside. Do not         512-327-9721 for a packet
      ence for bat conservation by              attempt to handle bats              of materials. For NWF
      working on local projects. The            without gloves; they may            teacher resources, visit
      following suggestions may                 bite in self-defense.               www.nwf.org/
      apply to your bats locally.             ✔ Provide bats and rabies facts       schoolyardhabitats.
                                                to local health departments,      ✔ Building a Schoolyard
      Actions That Everyone                     veterinarians, and personal         Habitat Site® at your school
      Can Take:                                 physicians. To obtain infor-        or Backyard Wildlife
      ✔ Visit Bat Conservation                  mation about bats and               Habitat™ at your home,
        International                           public health issues, visit         complete with native plants,
        (www.batcon.org or call                 www.batcon.org and click            bird feeders, bee-attracting
        512-327-9721) to obtain                 on “Bats and Rabies” or call        flowers, and other food,
        the most up-to-date infor-              512-327-9721 to receive a           water, shelter, and places to
        mation about bats and bat               hard copy of these materials.       raise young for all your local
        conservation.                         ✔ Help a neighbor, school, or         wildlife. To find out more,
      ✔ Encourage your family to                community center provide            visit www.nwf.org/
        visit National Wildlife                 bat habitats.                       backyardwildlifehabitat
        Federation (www.nwf.org)                                                    and www.nwf.org/
        to learn about all kinds of           Even if you don't live in an          schoolyardhabitat. To find
        wildlife and habitat                  area with bats,                       out what wildlife live in
        protection.                           there are still lots of actions       your area, visit
      ✔ Consider giving a bat lecture         you can take to help protect          www.enature.com.
        to local schools, nature              wildlife and habitat!               ✔ Organizing a wildlife appre-
        centers, zoos, museums, or            It is important to understand         ciation day at your school
        libraries. Slides and videos are      wildlife before people can really     and educating other
        available through BCI’s               care about their survival.            students about the impor-
        catalog.                              Teachers and students can             tance of wildlife and habitat.
      ✔ Write an article about bats           increase wildlife awareness and     ✔ Promoting the “look, but do
        for your local newspaper              contribute to habitat protec-         not touch” approach of
        (especially for Halloween).           tion and restoration by:              respecting wild animals.
      ✔ Help people safely remove             ✔ Teaching a unit on habitats
        stray bats from living quar-              and wildlife. Exciting
        ters. This can be done easily             activity guides are available
        by covering the bat with a                both through BCI and
        coffee can when it lands and              NWF. For a list of teacher
        slipping a piece of cardboard             references, visit


24   | AMERICAN BATS: ONLINE ACTIVITY GUIDE


                                                                                             www.nwf.org
NATIONAL WILDLIFE FEDERATION                                                                             BATS




Further Resources
For more information on bats         ✔ Link to other bat conserva-    ✔ Download bat house plans
and Backyard Wildlife Habitat          tion resources and over 150      and secrets to successful bat
projects, check out:                   different bat conservation       houses at
www.nwf.org/                           and resource sites at            www.batcon.org/bhra/
backyardwildlifehabitat/ and           www.batcon.org/home/             index.html.
www.batcon.org.                        batlinks.html.
                                     ✔ For information on which
For articles and activities on all     species are present in your
kinds of wildlife, subscribe to:       area, visit
Ranger Rick, Your Big Backyard,        www.enature.com.
or Wild Animal Baby by               ✔ Check out Bats of the United
visiting www.nwf.org/kids/.            States by Michael Harvey, J
                                       Scott Altenbach, and Troy L.
                                       Best, 1999. Published by the
                                       Arkansas Game and Fish
Resource Information                   Commission in cooperation
For independent study,                 with the U.S. Fish and
answering questions, and               Wildlife Service, this 64-
educating others, go to                page color paperback book
www.batcon.org/discover/               has large photos, range map
layout-discovery.html.                 and descriptions for each
                                       U.S. bat species and lots of
To delve deeper into special           general bat information.
topics and research about bats
✔ Search BATS Magazine back          Teacher and Student
   Issues and access all text and    Activities—Free Stuff!
   photos from BATS Maga-            ✔ Download activities from
   zine archives at                    the “Educator’s Activity
   www.batcon.org/batsmag/             Book” (elementary age
   index.html.                         students) at
✔ Search bibliographic data-           www.batcon.org/
   base of scientific literature       topedu.html.
   about bats and browse bibli-      ✔ Download an activity from
   ographic references for             “Discover Bats!” (middle-
   6,000 entries about bats and        school age students) at
   bat research at                     www.batcon.org/disco/
   www.batcon.org/bibsearch.           intro.html.
   html.


                                                                          AMERICAN BATS: ONLINE ACTIVITY GUIDE   |   25

www.nwf.org

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National Wildlife Federation's Bat Guide

  • 1. Night Friends- American Bats On-line Activity Guide The National Wildlife Federation™ and Bat Conservation International are working with the U.S. Postal Service to promote the American Bats Stamps as a tool to educate and inspire Americans about the beauty of our nation's wildlife and urgent need to conserve it. BAT CONSERVATION INTERNATIONAL You can purchase stamps by calling 1-800-STAMP24 or online at www.usps.com
  • 2. NATIONAL WILDLIFE FEDERATION BATS Background Origins and Relatives Did you know that the world’s smallest mammal, the bumblebee bat, weighs less than a penny? Bats play a vital role in the health of our natural world, and are fascinating creatures. They are a group of mammals that belong to the group, “Chiroptera,” which means hand-wing. All living bat species fit into one of two sub-groups, the Microchiroptera or the Megachiroptera. Members of the latter group are often called “flying foxes” because of their fox-like faces. They are found only in the Old World tropics, while the Microchiroptera, which are highly varied in appearance, occur worldwide. Diversity and Distribution The more than 1,000 species of bats make up approximately 25 percent of all mammal species, more than any other mammal group except rodents, and they are found everywhere in the world AMERICAN BATS: ONLINE ACTIVITY GUIDE | 1 www.nwf.org
  • 3. BATS NATIONAL WILDLIFE FEDERATION except in the most extreme desert and polar regions. Some 40 species live in the United States and Canada, but the majority inhabit tropical forests where, in total number of species, they sometimes outnumber all other mammals combined. Bats come in an amazing A bat emits a high-frequency sound, variety of sizes and appear- which hits an object and bounces ances. While the bumblebee back to the bat, telling it how far bat is at one extreme, some away the object (prey) is. flying foxes of the Old World tropics have wingspans of up to six feet. The big-eyed, winsome intricate facial features that total darkness they can detect expressions of flying foxes often become more fascinating when obstacles as fine as a human surprise people who would their sophisticated role in navi- hair. The sophistication of never have thought that a bat gation is explored. these unique echolocation could be cute. Some bats have systems surpasses current scien- long angora-like fur, ranging in tific understanding and has Navigation and Migration been estimated to be billions of color from bright red-brown or Like dolphins, most bats times more efficient than any yellow to jet black or white. communicate and navigate similar system developed by One species is furless, and with high-frequency sounds, humans. In addition, bats are another even has pink wings which they bounce off of not blind and many have excel- and ears. A few are so brightly objects to determine where and lent vision. patterned that they are known how far away they are. Using as butterfly bats. Others have sound alone, bats can “see” In temperate regions, cold enormous ears, nose leaves, and everything but color, and in winters and the subsequent lack of insect prey force bats to migrate or hibernate. Most travel fewer than 300 miles to find a suitable cave or aban- doned mine, where they remain for up to six months or more, surviving solely on stored fat reserves. However, 2 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 4. NATIONAL WILDLIFE FEDERATION BATS several species are long-distance nating sites to warmer roosts, attack humans, and they live migrators, traveling from as far where they form nursery only in Latin America. With north as Canada to the Gulf colonies. Birth occurs approxi- the exception of three species states or Mexico for the winter. mately a month and a half to of nectar-feeding bats that live A few species can survive short- two months later. Young bats along the Mexican border of term exposure to sub-freezing grow rapidly, often learning to Arizona and Texas, all bats in temperatures, enabling them to fly within three weeks. While the United States and Canada overwinter in crevices in cliff they are being reared, males are insectivorous. faces or inside the outer walls of buildings. Bats can be found roosting in a wide range of shelters, although they are best Courtship and known for living in Reproduction caves. Tropical Most bats that live species occupy an in temperate even wider range of regions, such as the roost sites than United States and temperate species. Canada, mate in the For example, fall just before entering some make hibernation. Ovulation tent-like roosts and fertilization (through by biting sperm that have been dormant Proportion of bat species through the in the female reproductive tract with each kind of bat diet. midribs of large leaves, and several species have suction discs on their and non-reproductive females wings and feet that enable often segregate into separate them to live in the slick-walled Young bats grow groups called bachelor colonies. cavities formed by unfurling rapidly, often leaves, such as those of the learning to fly within Although 70 percent of bats eat banana plant. Others live in insects, many tropical species animal burrows, flowers, three weeks. feed exclusively on fruit or termite nests, and even in large nectar. A few are carnivorous, tropical spider webs. Despite hunting small vertebrates such the wide variety of roosts used since the previous fall) occur in as fish, frogs, mice, and birds. by bats, many species have the spring as females emerge Despite their notoriety, there adapted to living in roosts of from hibernation. Pregnant are only three species of only one or a few types and females then move from hiber- vampire bats, they do not cannot survive anywhere else. AMERICAN BATS: ONLINE ACTIVITY GUIDE | 3 www.nwf.org
  • 5. BATS NATIONAL WILDLIFE FEDERATION Why Should I Care species. Each of these about Bats? species of bats Worldwide, bats play essential supports plants that roles in keeping populations of are crucial to entire night-flying insects in balance. ecosystems. Many Just one bat can catch hundreds plants bloom at of insects in an hour, and large night, using unique odors and special flower shapes that attract bats. The famous baobab tree of Seeds dropped the eastern African savannas is a good by bats can account example. Only bats can for up to 95 percent approach from below in a of forest regrowth manner likely to contact the flower’s reproductive organs on cleared land. and achieve pollination. provide more than 450 Wild varieties of many of the economically important prod- world’s most economically ucts, valued in the hundreds of colonies catch tons of insects valuable crop plants also rely millions of dollars annually. nightly, including beetle and on bats for survival. Some of The value of tropical bats in moth species that cost Amer- the better-known commercial reforestation alone is enor- ican farmers and foresters products include fruits such as mous. Seeds dropped by bats billions of dollars annually, not bananas, breadfruit, avocados, can account for up to 95 to mention mosquitoes in our dates, figs, peaches, and percent of forest regrowth on backyards. In a single mid- mangoes. Others include cleared land. Performing this summer night, the 20 million cloves, cashews, carob, balsa essential role puts these bats free-tailed bats from Bracken wood, and even tequila. among the most important Cave in central Texas eat more seed-dispersing animals of both than 200 tons of insects! We already know that more the Old and New World than 300 plant species in the tropics. Throughout the tropics, the Old World tropics alone rely Excerpted with permission from “The World seed dispersal and pollination on the pollinating and seed of Bats’’ in America’s Neighborhood Bats activities of fruit- and nectar- dispersal services of bats, and by Merlin Tuttle, Copyright © 1988. Courtesy of the University of Texas Press. eating bats are vital to the additional bat-plant relation- survival of rain forests, with ships are constantly being some bats acting as “keystone’’ discovered. These plants 4 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 6. NATIONAL WILDLIFE FEDERATION BATS Featured Bats another gleaner that feeds and to migrate. Unlike most mostly from the ground, unlike bats, red bats often give birth to the majority of North American twins and can have litters of up Macrotus californicus, bats, which capture flying prey. to five young, though three is California leaf-nosed bat With its huge ears, it can detect average. In the fall they perform The Cali- insects simply by listening for long-distance migrations, travel- fornia leaf- footsteps, and it can respond ling the same routes along the nosed bat is accurately to a split-second Atlantic seaboard as many small the only bat sound from up to 16 feet away. birds do. in the United Its most common prey include States to have Euderma maculatum, crickets, beetles, grasshoppers, both large ears and a nose leaf. It spotted bat and even scorpions. Pallid bats is also one of the most acrobatic The roost in rock crevices, buildings, fliers. This bat is a “gleaner,” spotted bat and bridges in arid regions. which means it is one of the few is one of They are found from Mexico U.S. bats that swoops down to America’s and the southwestern United capture insect prey straight from most States north through Oregon, the ground or plants rather than striking Washington, and western in flight. It typically hunts mammals. Its long, silky fur is Canada. within a few feet of the ground, snow white beneath and jet using its superior eyesight and Lasiurus black above, with large white hearing to search for insects such borealis, spots on its shoulders and as crickets, grasshoppers, beetles, red bat rump. Its translucent pink ears, and sphinx moths. California Red bats nearly as long as its body, are leaf-nosed bats do not hibernate, are North the largest of any bat found in nor do they migrate. They can America’s the United States, and it has be found in desert scrub habitats most abundant “tree bats.” pink wings to match! Initially in the Colorado River valley in They are found east of the thought to be extremely rare, southern California, Nevada, Rocky Mountains from central the spotted bat is now known to and Arizona, and throughout Canada to central Florida wher- live from southwestern Canada, western Mexico. ever there are trees. Red bats south through the western roost in tree foliage, where their United States to northern Antrozous pallidus, rusty red color makes them look Mexico. It is hard to find pallid bat like dead leaves. They are because it roosts high up in The pallid perfectly camouflaged as they cliff-face crevices and emerges to bat has hang from a single foot with feed late at night. Moths that large ears, their furry tails curled around are caught high above the but no nose them. Red bats are solitary, ground are its favorite prey. leaf. It is coming together only to mate AMERICAN BATS: ONLINE ACTIVITY GUIDE | 5 www.nwf.org
  • 7. BATS NATIONAL WILDLIFE FEDERATION ACTIVITY investigating bat adaptations 1 Summary: Background piper fruits, but some flying Students investigate adaptations foxes are generalists that eat Did you ever stop to think what many sizes and kinds of fruit as that increase a bat’s chance of the world would be like if all well as nectar. finding food and surviving in a animals suddenly tried to eat particular habitat. just one kind of food? What if Some bats that catch insects Grade Level: they all decided to eat just grass? have adaptations for hunting 3-6 The answer is simple. They certain kinds of prey or for Time: soon would run out of grass and capturing them in certain starve to death. Because animals places. Free-tailed bats are like two activity periods eat a wide variety of foods, they little jet airplanes, using their Subject: compete less, allowing many long, narrow wings and far- science different species of animals to reaching echolocation (sonar Skills: live in the same habitat and systems) for chasing moths high observation, comparison, maintain healthy ecosystems. up in the sky. California leaf- hypothesizing nosed bats are more like heli- Learning Objectives: Most of the world’s bats eat copters, relying on short, broad Students will be able to: insects, and in areas with cold wings to snatch crickets and ✔ List several different foods winters, that is all they eat. other insects from plants or the that bats eat. Many tropical bats eat fruit and ground. They can use their ✔ Describe anatomical features nectar, and a few are carnivores extra-large eyes and ears to find that lend themselves to that eat other animals, including insects without even using particular bat diets. rats and mice, small birds, frogs, echolocation. Big brown bats ✔ Analyze bat features to accu- lizards, or even fish. Only three have especially strong jaws and rately predict their diets. out of more than 1,000 species teeth for chewing hard beetles. of bats drink blood. Pipistrelles have tiny teeth for Materials: eating gnats and mosquitoes, ✔ Bats Adapt for Food cards Each species of bat is adapted and gray myotis have large feet (one set of six cards for each for the food it eats. Some bats for catching mayflies as they group) specialize in eating just one or a hatch from a pond’s surface. ✔ Bat Food Clues at the end of few kinds of food, but others the lesson, paper for students are generalists that eat a wide Most experienced bat scientists to write answers variety of foods. Long-nosed can guess what a bat eats by bats have noses of varied lengths looking closely at its adapta- and widths that match the sizes tions. Long, narrow wings or and shapes of the flowers from large tail membranes are usually which they drink nectar. adaptations for catching insects, Carollia fruit bats are adapted to but if the bat also has huge feet feeding almost entirely on small and claws, it probably eats fish. 6 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 8. NATIONAL WILDLIFE FEDERATION BATS Just having large, but not overly specialists, such as the huge- fact cards among its members large, feet would indicate a bat footed fishing bats, or long- so that every student can that catches insects from pond nosed nectar bats, live only in become an expert on one of surfaces. If a bat is large and has tropical areas where climates the bat eating habits. (Two strong jaws, long canine teeth, and food sources are students can share a single and a large tail membrane, it is the most predictable. card in groups having more probably a carnivore, adapted Bats that live in than six students.) both to eating meat and to northern climates, turning quickly while chasing where changes are 3. Ask students to take out a prey. If it has strong jaws and frequent and piece of paper and number it long canine teeth, but has only unpredictable, from one to twelve down the a very small tail membrane, it is are all insect-eaters left-hand side. Ask questions a fruit bat that does not need to that seldom by reading the “Bat Food chase prey, but is adapted for specialize on Clues” to the class one at a biting into tough-skinned fruit any one time. to squeeze the juice out. insect type. Both insect-eating and In these 4. Give each group a minute or meat-eating bats always places, it is rare to find two to discuss each given have long tails or tail a bat with highly specialized clue, and decide what type of membranes, but wings, feet, or ears. bat it is (for example, insect- meat-eaters are eating, fruit-eating, etc.). the largest and have the strongest jaws. Preparation 5. After all Bat Food Clues are given and students have Special adaptations allow bats to Make enough copies of the Bats written their answers, go back find and eat certain kinds of Adapt for Food cards to through the ’ Bat Food Clues’ food with little or no competi- distribute one complete set to and lead the class in tion from other species. This is each group. You may want to discussing the answers. Bonus very successful as long as their laminate the cards for durability. questions after each Bat Food unique food type is abundant, Clue can be used to stimulate but such specialization is risky, additional discussion. Each because the kinds of prey, fruit, Procedure group’s expert on each feeding or flowers a bat eats might die 1. Divide your class into groups type can be called upon to out, leaving the bat to starve. of six or more students each. help lead discussions. Animals that eat a variety of foods can switch types if one 2. Distribute one complete set disappears, but they cannot of Food Cards to each group. compete well with specialized Tell the group to divide the animals for any one food. Most AMERICAN BATS: ONLINE ACTIVITY GUIDE | 7 www.nwf.org
  • 9. BATS NATIONAL WILDLIFE FEDERATION Extensions Assessment ✔ Challenge students to investi- ✔ Have students write letters to gate other animals that have advertisers they select, food habits similar to bats. explaining why they think a For example, some birds bat would make the perfect snatch insects out of the air, mascot for their product. while others pick them from Students could apply their foliage. How do the habits and knowledge of bat characteris- habitats of these birds compare tics and make their own with those of bats? What about connections to products. fruit-eating birds? Nectar- For example, bats can fold eating birds? Fish-eating birds? their wings around them to Are there any other animals protect them from the that eat blood? Students can elements, so present their results in poster they’d make or report format. a great mascot ✔ There have been many other for umbrellas or rain- bats featured on stamps from coats. Or bats could adver- all countries and many other tise insect repellent since they backyard wildlife species eat mosquitoes. Or maybe featured on U.S. stamps. See aircraft manufacturers, since how many you can find to bats use radar. Sports teams? start your collection. Visit Night vision goggles? the American Philatelic ✔ Have students create a Society’s website, Halloween card with a bat on www.stamps.org/kids/kid_ it to mail to their grandpar- StampFun.htm, for more ents or friends. Inside, they information on these stamps, could include a “Did You stamp collecting, and Know?” section listing inter- National Stamp Collecting esting facts they learned Month (October, 2002). about bats. Excerpted with permission from “Discover Bats!’’ a multi-media activity guide by Bat Conservation International, Copyright © 1998. 8 | WHERE IN THE WORLD IS THE ARCTIC? www.nwf.org
  • 10. NATIONAL WILDLIFE FEDERATION BATS ACTIVITY teacher REFERENCE SHEET 1 Bat Food Clues 1.WHO AM I? 4.WHO AM I? Clue: My toes and claws are exceptionally long, Clue: I fly fast over quiet water, searching for tiny and the sides of my toes and claws are flat. moving objects. My fur is oily. Bonus Questions: Bonus Questions: What is the advantage of having long toes and What is the advantage of flying over calm water? claws? What is the advantage of having flattened What is the advantage of oily fur? toes and claws? Answers: Answers: 4. I am a fish-eating bat. To easily detect tiny fin 1. I am a fish-eating bat. Can reach into water tips using echolocation. To shed water, keep bat without submerging body. To glide easily fur dry, and avoid getting cold. through water. 5.WHO AM I? 2.WHO AM I? Clue: My short, broad wings and my large tail Clue: My legs are extra strong and my kidneys membrane allow me to dart in and out of work quickly so I can eliminate water as fast as branches. I eat. Bonus Questions: Bonus Questions: What is the advantage of being able to dart in and How do fast-working kidneys help a blood-eating out of branches? What is the advantage of being able bat? What is the advantage of extra strong legs? to catch insects on the ground or in bushes? Answers: Answers: 2. I am a blood-eating bat.To get rid of the water, 5. I am an insect-eating bat that catches prey on so the bat won't be too heavy to fly. To walk on the ground or on plants. To avoid obstacles and the ground while stalking large prey or to jump catch prey. To avoid competing for food with away quickly if the prey wakes. other bats that feed in the open. 3.WHO AM I? 6.WHO AM I? Clue: I am a large, strong bat with large ears and Clue: I have sharp teeth and strong jaws that can broad wings. cut or crush big meals, I also have a big tail Bonus Questions: membrane. Why does a carnivorous bat need big ears? What is Bonus Questions: the advantage of having broad wings? What is the advantage of having sharp teeth and Answers: strong jaws? What is the advantage of a big tail 3. I am a meat-eating bat. To listen to and find membrane? prey. To better lift heavy prey. Answers: 6. I am a meat-eating bat. To quckily kill and cut up large prey and break bones. To maneuver better when chasing prey. AMERICAN BATS: ONLINE ACTIVITY GUIDE | 9
  • 11. BATS NATIONAL WILDLIFE FEDERATION ACTIVITY teacher REFERENCE SHEET 1 Bat Food Clues 7.WHO AM I? 10.WHO AM I? Clue: My teeth are small, except for my front Clue: My tongue is long and my wings allow me teeth, which are sharp and can cut like a razor. to hover. My nose can detect heat. Bonus Questions: Bonus Questions: Why does this bat need to hover in flight? What is Why are razor-sharp teeth important? What is the the value of a long tongue? advantage of a heat-sensitive nose? Answers: Answers: 10. I am a nectar-eating bat. To visit flowers 7. I am a blood-eating bat. To make quick, rapidly without landing, therefore staying safe painless cuts. To find areas on prey that are rich from predators. To reach deep in to flowers and in blood. lap up nectar. 8.WHO AM I? 11.WHO AM I? Clue: I have sophisticated echolocation abilities; Clue: My teeth are flat and my jaws are strong so long, narrow wings; and small ears. I can squeeze juice from my food. Bonus Questions: Bonus Questions: Why do bats have echolocation as well as good Why does this bat discard as much pulp as possible? eyesight? What advantages do long, narrow wings What is the advantage of having flat teeth? have? Answers: Answers: 11. I am a fruit-eating bat. To get the most nutri- 8. I am an insect-eating bat that catches prey in tious part of the fruit without carrying extra the air. To pursue prey on the darkest nights and weight. To squeeze out juice without cutting up to roost in deep, dark caves where they are safe the pulp. from predators. To chase fast-flying insects and travel far. 12.WHO AM I? Clue: My nose is long and narrow and my teeth 9.WHO AM I? are very small. Clue: I can smell my food from a long way off Bonus Questions: and I don't have to echolocate. What is the advantage of small teeth? What is the Bonus Questions: advantage of a long, narrow nose? Why do many of these bats not need to echolocate? Answers: Why is a good sense of smell important? 12. I am a nectar-eating bat. Nectar doesn't need Answers: to be chewed, so heavy teeth aren't needed. To 9. I am a fruit-eating bat. They don't live in caves reach deep into long, narrow flowers. and echolocaiton isn't necessary for finding fruit. To smell ripe fruits, because color can't be seen in the dark. 10 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 12. NATIONAL WILDLIFE FEDERATION BATS ACTIVITY WORKSHEET 1 Bats Adapt for Food Cards Meat-Eating Bat Fish-Eating Bat Carnivore (CAR-nih-vore) Piscivore (PISK-kah-vore) Body: Larger than average size; long legs and enormous feet; long, sharp, hooked claws; toes flat for knifing through water; oily fur that sheds water to keep dry. Body: Large size for capturing and carrying off other animals. Head: Strong jaws for killing and chewing fish; special echolocation ability to detect ripples or Head: Strong jaws for killing prey; large ears help fins on water surface. identify and locate a mouse's footsteps or the call of a frog. Wings: Narrow and long for flying fast over water. Wings: Broad, with up to three-foot wingspan; large Teeth: Sharp (similar to insectivores), for chopping tail membrane for maneuvering rapidly. and grinding fish. Teeth: Sharp molars and long canines for chopping flesh and crushing bones. AMERICAN BATS: ONLINE ACTIVITY GUIDE | 11 www.nwf.org
  • 13. BATS NATIONAL WILDLIFE FEDERATION ACTIVITY WORKSHEET 1 Bats Adapt for Food Cards Blood-Eating Bat Insect-Eating Bat Sanguivore (SAN-gua-vore) Insectivore (in-SECK-tih-vore) Body: Strong legs for walking on ground or climbing Body: Many body shapes, all small. on prey and for jumping into flight when full of blood. Head: Many kinds of faces and ears that aid Head: Heat-sensitive nose helps find blood vessels echolocation and hearing while hunting for closest to prey’s skin surface; short pug muzzle makes insects. biting easier. Wings: Insectivores that catch insects on the Wings: Broad and short; strong enough to carry ground or on plants (gleaning insectivores) have heavy food loads with a full stomach. broad, short wings and large tail membranes for Teeth: Tiny molars; incisors forming large, razor-sharp darting in and out of branches or hovering close blades for slicing prey's skin; grooved tongue for lapping to the ground. Insectivores that chase insects in blood; special saliva keeps blood from clotting so bat the air while flying (aerial insectivores) have longer, can keep drinking. narrower wings and often have smaller ears for streamlining; some use their tail membrane to help Special: Kidneys allow bat to urinate as fast as it catch prey. eats to lighten the load before flying home Teeth: Sharp, for grinding and chopping tough insect bodies. 12 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 14. NATIONAL WILDLIFE FEDERATION BATS ACTIVITY WORKSHEET 1 Bats Adapt for Food Cards Fruit-Eating Bat Nectar-Eating Bat Frugivore (FROO-gah-vore) Nectarivore (NECT-ter-ah-vore) Body: Often large with bright colors; most have no tail and little or no tail membrane. Body: Small body Head: Medium to short snouts; keen nose for smelling ripe fruit; strong jaws for biting fruit; large eyes Head: Long, slender snout fits perfectly into flowers; with excellent vision; many don't echolocate. long, delicate jaw; grooved lower lip and rough, scaly tongue to catch nectar; excellent vision; and Wings: Wide and short for carrying heavy fruits; small sense of smell. tail membrane. Wings: Short and wide with long wingtips for Teeth: Wide, flat grinding teeth and strong jaws for hovering above flowers. crushing fruit-separates juice and spits out pulp; some have grooved teeth to more easily collect juice. Teeth: Small; not used much for chewing due to liquid diet. AMERICAN BATS: ONLINE ACTIVITY GUIDE | 13 www.nwf.org
  • 15. BATS NATIONAL WILDLIFE FEDERATION ACTIVITY bats:maligned or malicious? 2 Summary: Background drink blood? Only three out of Students explore their views the more than 1,000 species of Humans tend to find some bats are actually ’ vampire of a threatened bat and animals naturally compelling, bats,’ and these species all live present their findings. while others are not so only in Latin America. Grade Levels: appealing. For example, many Virtually all U.S. bats are 3-8; K-2 of us would much rather see insect-eaters (There are a few Time: moose, loons, and rabbits on a bats in the Southwest that live Two or more class periods, jaunt in the woods than snakes, on nectar and a few species eat depending on the presentations. spiders, and bats. Because of fish). Do bats carry disease? the way these animals have Like all animals, bats can carry Subjects: been portrayed in myths, folk- science, reading, presentation, diseases. Yet public-health lore, books, and movies, many worries about bats are exagger- social studies of us are biased towards cute, ated. The probability of Skills: furry animals, even though all catching a disease from a bat is analysis, application, classifica- species play important roles in far less than the risk of being tion, comparison, description, their ecosystems. Although struck by lightning. For anyone evaluation, research, synthesis some of our responses to who simply leaves bats alone, certain wildlife help protect us and never attempts to handle Learning Objectives: from danger, logic does not them, they are invaluable allies Students will be able to: always guide our beliefs and that need not be feared. ✔ Describe several views behaviors. Furthermore, we people hold about bats. However, as with other wild tend to overlook the benefits animals, those that can be ✔ Identify misconceptions some species offer humans and caught are most likely to be about a threatened species. other wildlife. For example, sick, and, because these may ✔ Reflect on changes in their spiders and bats help control ’ bite in self-defense, and can attitudes about wildlife. nuisance’ insects and provide transmit potentially dangerous ✔ Share natural history and food for other animals. Many diseases, they never should be conservation knowledge about bats. snakes control some rodent handled. populations. Yet, many of our Materials: beliefs about animals are not Most of our fears about wildlife ✔ Copies of “Threatened:The based on scientific facts. are generated from some level Indiana Bat” readings of primal fear based simply on (whichever one is more Beneficial Bats the unknown. Bats are small, appropriate for your Bats often suffer from negative, mysterious creatures of the students’ reading level). Each Halloween-like associations. student will need one night that spend time in caves Many people think of Dracula, reading. and other dark places. Interest- blood-sucking fangs, disease, or ✔ Craft materials (optional) ingly, in the tropics, where bats tangled in the hair. Are ✔ Props (optional) many of the bats are much these perceptions fair? Do bats 14 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 16. NATIONAL WILDLIFE FEDERATION BATS larger and more easily seen in Procedure two versions are provided; pick their habitats, they are not the version with the reading feared. 1. Tell your students that they level most appropriate for your will be learning about bats. students.) Another option is to Due to killing stemming from For fun, ask them to practice have students conduct the carelessness or the fear of bats, making a special sound research themselves. Mention and continued habitat loss, bat made by a bat called the that Indiana bats are threat- populations have suffered. Bats “body buzz.’’ The body ened species in the United reproduce slowly, typically buzz is a low sound bats States. There are also many rearing only one young per make when they are resting other species of bats year, making population and seem contented before throughout North America. recovery a slow process. Instead they go to sleep. The bat’s 5. Give students time to read of spreading myths, we should whole body vibrates. about bats. consider bats’ real roles in 2. What do your students 6. If possible, head outside to ecosystems. Bats are important know about bats, important evaluate your school to the natural world. Feeding animals throughout North grounds or a local area as at night, they catch billions of America? Instruct students habitat for bats. Is there a insects. Nature’s bug-zappers to create a concept map for forest nearby? Are there any are wonderfully efficient, bats. A concept map is a caves or streamside trees catching as many as 600 diagram representing where bats could roost and mosquitoes an hour. Bats also thoughts and ideas associ- feed? Are there trees with eat a number of crop pests, ated with a certain subject, peeling bark for bats to hide helping farmers and reducing in this case a bat. (See under? the need for harmful pesticides. diagram for an example, 7. Back in the classroom, Many tropical bats feed on done for wolves.) Encourage divide the class into small fruit or nectar and in the students to record their own groups of two to three process pollinate plants and ideas and then share with students. Explain that each disperse seeds, helping to their group; there are no group will be responsible regenerate the forest. Any right or wrong answers. for designing and sharing a number of familiar plants 3. Review the concept maps as presentation about bats. depend on bats, including figs, a class and discuss any 8. Give students the following bananas, avocados, cloves, and commonalities. How are guidelines for their presen- cashews. bats generally perceived by the tations. The presentations class? In a positive light? A might be in the form of a negative light? Why? newscast (perhaps inter- 4. Distribute copies of ’ viewing a biologist), skit, Threatened: The Indiana radio show, documentary, Bat’ to each student. (Note: song, poster, mural, AMERICAN BATS: ONLINE ACTIVITY GUIDE | 15 www.nwf.org
  • 17. BATS NATIONAL WILDLIFE FEDERATION diorama, or other medium. additional research mate- Modifications for The final presentation rials available, particularly Younger Students should last roughly five on bat pollination if (Grades K-2) minutes. In addition to possible. Also, consider being fun and creative, the having props available, or For younger students, intro- presentations should also put students in charge of duce the book Stellaluna, by convey key, accurate infor- finding what they need for Janell Cannon. This delightful mation about bats. One their presentations. If time story portrays bats in a posi- important role of the pres- allows, this can develop tive light, following the antics entation is to educate into a more involved of the young bat Stellaluna as people about myths they project taking several class she spends time with a family may have heard about bats. periods. of birds and discovers her true For example, are bats really 11. Presentation time! Invite identity. blood suckers? What kinds of student groups to deliver benefits do bats provide to their presentations to the Modifications for people and ecosystems? rest of the class. After each (Grades 5-8) 9. Let students know they will presentation, review the be evaluated on their criteria listed on the board Older students can research presentations. As a class, as a class and evaluate the different species of bats on develop a list of criteria for presentation. Remind their own, instead of relying on judging the presentations. students of the difference the readings provided. They Record the ideas on the between constructive and could conduct comparisons board. Encourage students destructive criticism. among different kinds of bats, to think about what they Encourage students to their diets, habitat require- believe makes a good begin with positive ments, and what plants they presentation. For example: comments and add sugges- may pollinate. Did the presentation demon- tions for improvement. strate how bats really behave? 12. To conclude, have students Did it show us why bats are develop a second concept Extensions important? Were the facts map for bats. Then have correct? Was the information students compare their pre- ✔ Have students deliver their clearly presented? Was the pres- and post-concept maps to presentations for other audi- entation interesting? reflect on their new under- ences. For example, invite Creative? Did it change the standing of these animals. another class, or parents. Or way classmates think about Discuss some of their share the presentations with a bats? results. parent or teacher association. 10. Give students time to work ✔ Do bats live in your region? If in their groups to prepare so, which ones? Build (or their presentations. Have order) bat boxes to make a 16 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 18. NATIONAL WILDLIFE FEDERATION BATS Schoolyard Habitats® site Compare the views that stories, art, phrases, and folk for bats. Bats are declining various cultures, including tales. Consider a trip to an in part due to a loss of Native American nations, art or natural history roosting sites. Providing a have toward eagles and other museum to search for infor- place for bats to roost and wildlife species. Which mation on bats. As follow- raise their young can be an wildlife species do they like up, students can investigate exciting project to benefit and dislike? Why? whether the portrayal is fair bats, and a great lead-in to ✔ Examined up close, bats given the animal’s true the Schoolyard Habitats have beautifully complicated behavior. project. For details, and faces and bodies. As a class ✔ For young students, more information about bats project, feature a bat beauty encourage them to list as and bat research projects, contest. Students can find many adjectives as they can consult Bat Conservation pictures of bats and create think of that begin with the International’s (BCI) website detailed drawings of their letters ‘b’ to describe bats. at www.batcon.org. BCI is a features. Which of the ‘b’ adjectives nonprofit organization dedi- ✔ Think of common phrases accurately describe the bat? cated to bat conservation, that refer to bats. For Do people ever use some of the research, and public educa- example, “blind as a bat’’ other adjectives to describe the tion. BCI sells ready-made and “going batty.” Can animals? Which ones? Why? bat houses and offers you think of others? Have For example, are bats blind detailed instructions on how students investigate the and bold or beautiful and to build inexpensive bat origin and meaning of these beneficial? houses. See pages 20-23 of phrases, as well as whether ✔ Pre- and post-concept maps this guide for a lesson plan they are fair statements based described in the lesson offer using these instructions. The on bats’ true behaviors and a great assessment tool. estimated cost of materials characteristics. to build a BCI bat house that can host over 100 bats is less than $20. Assessment ✔ What other animals suffer from human misconceptions? ✔ Compare the perceptions Investigate and find out. various cultures have One example is raptors, such regarding bats today and as eagles and hawks. historically. Students might Although they are protected divide into groups (perhaps by law, magnificent animals by region of the world or such as eagles were once shot era) to investigate how these as pests and for sport. bats are portrayed in myths, AMERICAN BATS: ONLINE ACTIVITY GUIDE | 17 www.nwf.org
  • 19. BATS NATIONAL WILDLIFE FEDERATION ACTIVITY WORKSHEET 2 Indiana Bat Is a bat a mouse with wings? No, bats are not caves with a temperature of rodents. Instead, bats belong to their own special 37-43° F. The caves were once group of mammals, Chiroptera.There are more filled with bats, but now many of the bats are gone. than 1,000 different kinds or species, of bats in the For example, one cave in Kentucky had at least world. Forty-five different species live in the 100,000 bats in the 1960s, but only 250 by 1987. United States. Why are bats disappearing? Some people like to Some bats eat nectar, fruit, or even fish, but almost explore caves, which may disturb bats while they all of the bats in the United States eat insects. In are hibernating. If bats wake up from hibernation fact, they eat lots and lots of insects. One bat can and have to move around, they will use too much eat more than 600 flying insects such as mosqui- energy and not have enough to survive the winter. toes in one hour! They find their food by “echolo- Other times, people build cave gates that lock the cation.’’ They make sounds (which humans can't bats out of their winter homes. Some gates trap air hear) that bounce off other objects and return to in the caves and make it too hot for the bats. their ears.These sounds help them to fly safely and Humans are also changing forests and causing locate their prey. problems for Indiana bats in their summer habitat. Bats like to feed and roost in trees near water- Many people don’t like bats. People think bats can ways. But in some areas, these important trees are get tangled in their hair or spread disease. In fact, cleared by logging, driving away the bats. In other bats can see and are very good at finding their way places, dams have been constructed, removing the around in the dark. A bat can “see” something as trees near the waterways that bats prefer. fine as a human hair using echolocation.The chance of a bat giving someone a disease is less than the But there is hope! In some places, people have chance of being struck by lightning. In fact, bats are built bat-friendly gates. For example, in Tennessee, very useful to people. They eat insects that might people built a special gate that weighs 23 tons.The damage farmers' plants and help gate lets bats into their natural habitat but keeps pollinate our crops. people out of this important place for bats. At least nine bat species in the United States are Many other animals also like to live and feed in endangered. Many bats are disappearing because forests next to streams. So, if we protect trees people misunderstand them or try to get rid of next to waterways, we’re protecting habitat for them, and they are losing their habitat. Bats suffer bats and other animals. because we disturb the caves and forests they need. The Indiana Bat is one species in trouble. What do you think about saving bats? This bat lives in parts of Maine,Vermont, New Hampshire, and New York, as well as states farther south and west. In winter, Indiana bats hibernate in 18 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 20. NATIONAL WILDLIFE FEDERATION BATS ACTIVITY WORKSHEET 2 Indiana Bat Bats look like mice with wings, but they are not on the Endangered Species List.The story of the rodents. In fact, they belong to their own group Indiana bat shows the problems faced by many of within the class of mammals, and this group is the 45 bat species in the United States. among mammals' most successful. Of the approxi- The Indiana bat is roughly the size of a house mately 4,000 species of mammals, nearly a quarter- sparrow, with gray-brown fur and pink to cinnamon over 1,000 species-are bats. underparts. It eats insects, which females and juve- niles snatch from the air over streams and trees. A few bats feed on nectar or fruit, but most feed on Males look for food at treetop level over dense insects.They have large appetites.A single bat, flying woods.The species can be found in the Midwest through the night sky in pursuit of prey, may eat more and eastern United States, from the western than 600 flying insects in one hour.A bat that lives for Ozarks of Oklahoma north to southern Wisconsin, 30 years may consume several million insects. east to Vermont, and south to Florida. Bats are high on the list of animals that are victims In winter, the Indiana bat hibernates in limestone of human myths and misunderstandings.Well- caves, especially caves in which temperatures adapted to flying at night, bats can navigate in total average 37° to 43° F with a relative humidity aver- darkness across a room crisscrossed with strings. aging 74 percent. In summer, Indiana bats live in They do it by sending out sounds that bounce off hilly countryside, along riverbanks, and on low of objects and return to the bats' ears, which read plains.The bats roost under the bark of dead and them like radar. One myth, that bats generally carry dying trees in these areas. the disease rabies, is also false. Only one-half of one percent (0.5%) of healthy-looking bats exam- The Indiana bat population has been falling since at ined in one U.S. study was found to be rapid. least the 1960s. For example, in the 1960s, Kentucky had five caves in which more than On the other hand, bats are useful to people. Some 150,000 Indiana bats hibernated. By 1988, the total bat species are pollinators of useful plants, eating winter population in the five caves was only nectar from blossoms and carrying pollen from 49,000.Today, nearly 90 percent of all Indiana bats flower to flower.Agaves, plants of the desert hibernate in only seven caves. Southwest used in making fiber ropes and other products, are bat-pollinated. Bats not only help One of the main reasons that bat people by eating huge numbers of insects, but bat numbers are falling is the loss of studies have been important in the development of cave habitat, especially caves used for low-temperature surgery, vaccines, and navigational hibernation. Some caves have been made into aids for the blind. tourist attractions. Others have been destroyed by vandals or disturbed by spelunkers (people who In recent decades, several U.S. bat species have had explore caves). Since 1950, these and other causes population declines. In 1973, the Indiana bat have eliminated and degraded major winter bat became the first of nine U.S. bat species to appear colonies of West Virginia, Indiana, and Illinois. AMERICAN BATS: ONLINE ACTIVITY GUIDE | 19 www.nwf.org
  • 21. BATS NATIONAL WILDLIFE FEDERATION ACTIVITY build a bat house! 3 Summary: ✔ One pint water-based primer, Background Students build a bat house for exterior-grade their Backyard Wildlife ✔ One quart flat water-based paint or stain, exterior-grade* Why Build a Bat House? HabitatTM or Schoolyard America’s bats are an invaluable Habitats® Site. ✔ One tube paintable latex caulk natural resource. Yet, due to Grade Level: ✔ 1'' x 3'' x 28'' board for roof decades of unwarranted human 2-8 ✔ 6 to 10 7/8'' roofing nails fear and habitat loss, bats are in Time: alarming decline. The loss of bats * Years of research have shown that bat contributes to growing demands 2 hours (plus painting and houses are far more successful at for toxic pesticides that increas- installation time) attracting bats if they are painted or ingly threaten our personal and Subject: stained. Painting helps maintain the proper internal temperature for bats environmental health. science, art, math and also increases the life span of the bat house.Appropriate color depends Skills: upon geographic location and amount of The most important goal is to construction, description, sun exposure.Adjust to darker colors preserve America’s most abun- for less sun. Use exterior-quality, water- dant bats in sufficient numbers analysis based stain or latex paint, and choose Learning Objectives: flat paint rather than gloss or semi-gloss. to maintain nature’s balance. If Students will be able to: you live in areas of bat habitats, putting up a bat house near your ✔ Identify reasons for building a Recommended Tools home or school can help provide bat house. ✔ table saw (for adults only) or a critical safe haven for bats. Bats ✔ Demonstrate a method for handsaw, caulking gun, vari- building a bat house. able speed reversing drill, make good neighbors; as ✔ Identify key criteria for paintbrushes, Phillips bit for primary predators of night- successful bat houses. drill, tape measure or yard- flying insects, they play a vital stick, scissors (optional), role in maintaining the balance Materials: staple gun (optional) of nature. People with occupied (for each house) bat houses on their properties ✔ 1/4 sheet ( 2'' x 4'' ) 1/2'' Bat House Color benefit from having fewer lawn CDX (outdoor grade) Recommendations Based and garden pests, and they enjoy on Average Daily High plywood Temperatures in July learning about bats and sharing ✔ One piece 1' x 2' (3/4'' x their knowledge with friends Less than 85˚ F = black 13/4'' finished) x 8'' pine and neighbors. Few efforts on (furring strip) 85˚ to 95˚ F = dark brown or other behalf of wildlife are more fun ✔ 20 to 30 11/4'' coated deck dark shade or rewarding than helping bats. or exterior-grade Phillips 95˚ to 100˚ F = medium brown or screws other medium shade Note: Some teachers opt to buy ✔ One pint black, water-based ready-to-hang bat houses and 100˚ F or greater = light tan or other stain, exterior-grade light shade concentrate the lesson instead on selecting a good site for mounting 20 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 22. NATIONAL WILDLIFE FEDERATION BATS it. Superior quality bat houses are neighborhood bats use your and disturbance. If you live available through the Bat Conser- outdoor wildlife habitat, and in an area bats use for habitat vation International catalogue at not your house! (check www.enature.com if 1-800-538-BATS in the U.S. you need to check), what and Canada. Preparation could you do to help them? One idea is to build a bat Looking for additional or other 1. Measure and cut plywood house to provide additional ways to provide better bat into three pieces for each habitat for them. habitat? You can try these other group: 26 1/2'' x 24'' for the 3. Divide your students into simple actions to attract bats to back board, 16 1/2'' x 24'' small groups to make bat your Backyard Wildlife Habitat for the front top, 5'' x 24'' houses, or make one or Schoolyard Habitats site, by for the front bottom. together as a large group. providing the insects to eat, 2. Pre-drill 11 screw holes on Make sure to use all appro- water to drink, and places to the back board, four on each priate safely considerations, hide that bats need for their side and three across the top. equipment, and adult super- habitat. 3. Pre-drill nine screw-holes on vision for use of tools. ✔ Got an anti-bug zapper in the front top board, three on 4. Roughen inside of back- your yard? You might want each side and three across board and landing area by to think about getting rid of the top. cutting horizontal grooves it! Zappers are useless on 4. Pre-drill four screw holes on with sharp object or saw. most biting insects and only the front bottom board, two Space grooves about 1/2" kill light-attracted moths, on each side. apart, cutting 1/32" to 1/16" which are good food for bats. deep. Ask students, why you ✔ Trees and shrubs, even dead might want to do this? (The ones left standing, are excel- Procedure bats need such texture for lent hideouts for bats—and climbing and roosting.) 1. Ask students, What do you birds. know about bats? Make a list ✔ Bats need water to drink. If on the board. What would you you build a mini-pond, like to know? Make a parallel you’ll also attract frogs and list. Discuss some of the many other water creatures. major characteristics of bats Find out how to do this on (from background) with the NWF’s website: students, and refer back to www.nwf.org/backyard- their list for later explorations. wildlifehabitat/ or at a 2. Explain to students that garden center or library. many bats are highly endan- ✔ Close up any holes in your gered (What does that mean?) attic to ensure that your due to habitat destruction AMERICAN BATS: ONLINE ACTIVITY GUIDE | 21 www.nwf.org
  • 23. BATS NATIONAL WILDLIFE FEDERATION 5. Apply two coats of black, Start with 24'' piece at top. BACK water-based stain to interior Roosting chamber will be surfaces. Do not use paint, 3/4'' wide (front to back). as it will fill grooves, making 8. Attach front to furring them unusable. strips, top piece first (don’t 6. Measure and cut furring forget to caulk wherever FRONT TOP strips into one 24'' and two pieces meet along both top 20 1/4'' pieces. and sides). Leave 1/2'' vent 7. Attach furring strips (3/4'' space between top and wide) to back, caulking first. bottom front pieces. FRONT BOTTOM FURRING STRIPS KEY CRITERIA FOR SUCCESSFUL BAT HOUSES DESIGN: - All bat houses should be at least 2 feet metal siding are seldom used.Wood or stone build- tall and 14 inches or more wide, with a landing area ings with good solar exposure are excellent extending below the entrance at least 3 to 6 inches. choices, and locations under the eaves often have • Most houses have one to four roosting cham- been successful. Mounting two bat houses back to bers—the more the better. Roost partitions back on poles is ideal. Place houses 3/4 inch apart should be carefully spaced 3/4 to 1 inch apart. and cover both with a galvanized metal roof to • All partitions and landing areas should be rough- protect the center roosting space from rain. ened.Wood surfaces can be scratched or grooved All bat houses should be mounted at least 12 feet horizontally, at roughly 3-inch intervals, or above ground; 15 to 20 feet is better. covered with durable plastic mesh (1/8 inch or 1/4 inch mesh, available from companies such as PROTECTION FROM PREDATORS: Houses Internet, Inc. at 1-800-328-8456). mounted on sides of buildings or on metal poles • Include vents 6 inches from the bottom of all provide the best protection from predators. houses to be used where average July high temperatures are 85º F or above. Front vents are AVOIDING UNINVITED GUESTS: Wasps can as long as a house is wide; side vents are 6 inches invade bat boxes before bats fully occupy it. Use of tall by 1/2 inch wide. 3/4-inch roosting spaces reduces wasp use. If nests accumulate, they should be removed in late winter HABITAT: Most nursery colonies of bats choose or early spring before either wasps or bats return. roosts within 1/4 mile of water, preferably a stream, Open-bottom houses greatly reduce problems with river, or lake. Greatest bat house success has been birds, mice, squirrels or parasites, and guano (bat achieved in areas of diverse habitat (with lots of droppings) does not accumulate inside. different species present). Bat houses are most likely to succeed in regions where bats are already TIMING: Bat houses can be installed at any time of attempting to live in buildings. the year, but are more likely to be used during their first summer if installed before the bats return in MOUNTING: Bat houses should be mounted on spring. poles or buildings. Houses mounted on trees or 22 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 24. NATIONAL WILDLIFE FEDERATION BATS 9. Caulk around all outside contributes to successful joints to further seal roosting bat habitat. chamber. 13. Install your bat house and 10. Attach a 1'' x 3'' x 28'' observe it! What do you board to the top as a roof, if discover? desired (optional, but highly recommended). Assessment 11. Paint or stain exterior three times (use primer for first ✔ Write a letter to Ranger Rick coat). Raccoon at the National 12. Where will you put up your Wildlife Federation about new bat house? Ask students your bat house, explaining to identify criteria for good what you learned about placement, based on what building and planning your they know about bats. bat house. Ask any bat- Consider: related questions you have. • permission to put it up, Be sure to use Bat Stamps on close to a pond, stream, or your envelope! lake where bats feed and ✔ Design a brochure showing drink, how to build and where to • diverse habitat that place a bat house. supplies a variety of insects, • lots of sunshine to warm the house (at least six hours daily in hot climates, more in cool locations, so young stay warm and grow fast), • facing east, west, or south (avoiding west in exception- ally hot climates) • on a pole or the side of a building), • about 12-15 feet above ground, • in an open area at least 20 feet away from nearest trees or other obstacles. For each of these factors, ask students to consider how it AMERICAN BATS: ONLINE ACTIVITY GUIDE | 23 www.nwf.org
  • 25. BATS NATIONAL WILDLIFE FEDERATION What You Can Do to Help Bats You do not need to travel far or between the wall and the www.batcon.org and click have a degree in biology to help opening. The bat then can on "Reading Lists" or call bats. You can make a big differ- be released outside. Do not 512-327-9721 for a packet ence for bat conservation by attempt to handle bats of materials. For NWF working on local projects. The without gloves; they may teacher resources, visit following suggestions may bite in self-defense. www.nwf.org/ apply to your bats locally. ✔ Provide bats and rabies facts schoolyardhabitats. to local health departments, ✔ Building a Schoolyard Actions That Everyone veterinarians, and personal Habitat Site® at your school Can Take: physicians. To obtain infor- or Backyard Wildlife ✔ Visit Bat Conservation mation about bats and Habitat™ at your home, International public health issues, visit complete with native plants, (www.batcon.org or call www.batcon.org and click bird feeders, bee-attracting 512-327-9721) to obtain on “Bats and Rabies” or call flowers, and other food, the most up-to-date infor- 512-327-9721 to receive a water, shelter, and places to mation about bats and bat hard copy of these materials. raise young for all your local conservation. ✔ Help a neighbor, school, or wildlife. To find out more, ✔ Encourage your family to community center provide visit www.nwf.org/ visit National Wildlife bat habitats. backyardwildlifehabitat Federation (www.nwf.org) and www.nwf.org/ to learn about all kinds of Even if you don't live in an schoolyardhabitat. To find wildlife and habitat area with bats, out what wildlife live in protection. there are still lots of actions your area, visit ✔ Consider giving a bat lecture you can take to help protect www.enature.com. to local schools, nature wildlife and habitat! ✔ Organizing a wildlife appre- centers, zoos, museums, or It is important to understand ciation day at your school libraries. Slides and videos are wildlife before people can really and educating other available through BCI’s care about their survival. students about the impor- catalog. Teachers and students can tance of wildlife and habitat. ✔ Write an article about bats increase wildlife awareness and ✔ Promoting the “look, but do for your local newspaper contribute to habitat protec- not touch” approach of (especially for Halloween). tion and restoration by: respecting wild animals. ✔ Help people safely remove ✔ Teaching a unit on habitats stray bats from living quar- and wildlife. Exciting ters. This can be done easily activity guides are available by covering the bat with a both through BCI and coffee can when it lands and NWF. For a list of teacher slipping a piece of cardboard references, visit 24 | AMERICAN BATS: ONLINE ACTIVITY GUIDE www.nwf.org
  • 26. NATIONAL WILDLIFE FEDERATION BATS Further Resources For more information on bats ✔ Link to other bat conserva- ✔ Download bat house plans and Backyard Wildlife Habitat tion resources and over 150 and secrets to successful bat projects, check out: different bat conservation houses at www.nwf.org/ and resource sites at www.batcon.org/bhra/ backyardwildlifehabitat/ and www.batcon.org/home/ index.html. www.batcon.org. batlinks.html. ✔ For information on which For articles and activities on all species are present in your kinds of wildlife, subscribe to: area, visit Ranger Rick, Your Big Backyard, www.enature.com. or Wild Animal Baby by ✔ Check out Bats of the United visiting www.nwf.org/kids/. States by Michael Harvey, J Scott Altenbach, and Troy L. Best, 1999. Published by the Arkansas Game and Fish Resource Information Commission in cooperation For independent study, with the U.S. Fish and answering questions, and Wildlife Service, this 64- educating others, go to page color paperback book www.batcon.org/discover/ has large photos, range map layout-discovery.html. and descriptions for each U.S. bat species and lots of To delve deeper into special general bat information. topics and research about bats ✔ Search BATS Magazine back Teacher and Student Issues and access all text and Activities—Free Stuff! photos from BATS Maga- ✔ Download activities from zine archives at the “Educator’s Activity www.batcon.org/batsmag/ Book” (elementary age index.html. students) at ✔ Search bibliographic data- www.batcon.org/ base of scientific literature topedu.html. about bats and browse bibli- ✔ Download an activity from ographic references for “Discover Bats!” (middle- 6,000 entries about bats and school age students) at bat research at www.batcon.org/disco/ www.batcon.org/bibsearch. intro.html. html. AMERICAN BATS: ONLINE ACTIVITY GUIDE | 25 www.nwf.org