title: The effect of visual stimulation at different stages of embryonic development on approach behaviour.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001522:Behavior, Animal; D002642:Chick Embryo / Q000254:growth & development* / Q000502:physiology; D002645:Chickens; D008027:Light; D014785:Vision, Ocular; D014796:Visual Perception; D014828:Vocalization, Animal