Animal behavior. Last year's food guides this year's brood.
Withgott
Jay
J
D000222:Adaptation, Physiological; D000818:Animals; D001522:Behavior, Animal; D003463:Cues; D004777:Environment; D005502:Food; D017752:Greenhouse Effect; D007858:Learning; D012098:Reproduction; D012621:Seasons; D020308:Songbirds / Q000502:physiology*; D013997:Time Factors