Breeding redpoll finches (Aves: Carduelinae) show extensive plumage and size variability and, in many cases, a plumage polymorphism that is not related to age or sex. This has been ascribed to extreme ...

This is a preview. Log in through your library . Abstract Parameters of various overt circadian functions (metabolic rate, feeding, locomotion) and their temporal relations were studied in redpolls, ...

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