Does Migration Constrain Glucocorticoid Phenotypes? Testing Corticosterone Levels during Breeding in Migratory Versus Resident Birds.

Abstract excerpt

Corticosterone, the main glucocorticoid in birds, is a major mediator of the incredible physiological feat of migration. Corticosterone plays important roles in migration, from preparation to in-flight energy mobilization to refueling, and corticosterone levels often show distinct elevations or depressions during certain stages of the migratory process. Here, we ask whether corticosterone's role in migration...

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