Patterns of testosterone in three Nearctic–Neotropical migratory songbirds during spring passage

Highlights • Testosterone levels were evaluated during vernal migration in 3 songbird species. • Testosterone is higher when males are closer to breeding grounds. • Testosterone does not change during vernal migration in female songbirds. • Increases in testosterone are related to date.

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Bibliographic Details
Published in:General and comparative endocrinology 2015-12, Vol.224, p.186-193
Main Authors: Covino, Kristen M, Morris, Sara R, Moore, Frank R
Format: Article
Language:English
Subjects:
Animal Migration - physiology
Animals
Annual cycle
Birds
Breeding
Breeding preparation
Endocrinology & Metabolism
Female
Male
Migration
Seasons
Songbirds - physiology
Testosterone
Testosterone - blood
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Description
Summary:Highlights • Testosterone levels were evaluated during vernal migration in 3 songbird species. • Testosterone is higher when males are closer to breeding grounds. • Testosterone does not change during vernal migration in female songbirds. • Increases in testosterone are related to date.
ISSN:0016-6480
1095-6840
DOI:10.1016/j.ygcen.2015.08.012