Article
Testosterone, migration distance, and migratory timing in song sparrows Melospiza melodia.
Hormones and behavior - 1 Sept 2016
Lymburner Alannah H, Kelly Tosha R, Hobson Keith A, MacDougall-Shackleton Elizabeth A, MacDougall-Shackleton Scott A
Abstract excerpt
In seasonally migratory animals, migration distance often varies substantially within populations such that individuals breeding at the same site may overwinter different distances from the breeding grounds. Shorter migration may allow earlier return to the breeding grounds, which may be particularly advantageous to males competing to acquire a breeding territory. However, little is known about potential...
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