Relationships between photoperiodism and circadian rhythms of activity in the house finch.
D000818:Animals; D001717:Birds / Q000502:physiology; D002940:Circadian Rhythm / Q000502:physiology*; D008027:Light; D008124:Locomotion; D008297:Male; D009929:Organ Size; D013737:Testis / Q000254:growth & development / Q000502:physiology*