Diel rhythmicity of activity and corticosterone metabolites in Arctic barnacle geese during breeding.

ABSTRACT: Birds that migrate from temperate areas to the Arctic to breed lose their strongest Zeitgeber of circadian organization when they cross the Arctic circle in spring - the 24h light-dark cycle. Under continuous daylight, diverse behavioral and physiological patterns have been detected in both free-ranging and laboratory animals. To better understand the evolution of plasticity in circadian clocks, it is essential to study behavioral and physiological rhythmicity in the context of a species' ecology. Employing a multifaceted approach, which included wildlife cameras, accelerometers, and noninvasive sampling of hormone metabolites, we investigated activity patterns and corticosterone rhythmicity in a migratory herbivore, the barnacle goose (Branta leucopsis), during its Arctic br

SUBMITTER: de Jong ME 

PROVIDER: S-EPMC12211741 | biostudies-literature | 2025 Jul-Aug

REPOSITORIES: biostudies-literature