McKinnonAOU2009

Bicknell's and Swainson's thrushes in regenerating New Brunswick clearcuts: niche separation by nest site and diet Emily A. McKinnon, Kevin C. Fraser, Antony W. Diamond University of New Brunswick, Fredericton

Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Intro: study species Catharus bicknelli = BITH Catharus ustulatus = SWTH

Bicknell’s Thrush ,[object Object],[object Object],[object Object],[object Object]

Swainson’s Thrush ,[object Object],[object Object],[object Object]

NB highlands ,[object Object],[object Object],[object Object]

Niche separation ,[object Object],SWTH BITH

Niche separation ,[object Object],[object Object],[object Object]

Nest patch characteristics ,[object Object],[object Object],        = non-nest site = nest site

Nest patch analyses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

BITH and SWTH nests Non-nest patch

BITH and SWTH ,[object Object],[object Object]

Dietary studies ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

‘ New’ method to quantify diet ,[object Object],[object Object],15 N/ 14 N 15 N / 14 N 15 N / 14 N 15 N / 14 N 14 N 14 N 14 N

Isotope timelines bone muscle whole blood/RBC plasma liver feather Long time Short time feces

Isotopic niche Bearhop et al. 2004 BITH? SWTH

When does blood reflect local diet? ,[object Object],[object Object]

 D throws a wrench in the plan BITH SWTH 20 June

SWTH: Specialist or generalist?

BITH: Specialist or generalist?

Summary Nest patch Diet Very specialized Very generalized Very specialized Very generalized SWTH BITH

Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Future work ,[object Object],[object Object],[object Object]

Acknowledgements ,[object Object],[object Object]

Questions? SWTH bad hair day.

McKinnonAOU2009

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