Seasonal change in light sensitivity in Carduelis flammea.
D000818:Animals; D001717:Birds / Q000502:physiology*; D002940:Circadian Rhythm / Q000528:radiation effects*; D005260:Female; D008027:Light; D008030:Lightning; D008297:Male; D009043:Motor Activity; D010775:Photic Stimulation; D012621:Seasons; D012726:Sexual Behavior, Animal; D013696:Temperature