title: Priming of ducklings' responses by presenting an imprinted stimulus.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001143:Arousal; D001921:Brain / Q000502:physiology; D003216:Conditioning, Operant; D004372:Ducks; D005239:Fear; D006799:Housing, Animal; D007173:Imprinting, Psychological; D012054:Reinforcement, Psychology; D012653:Self Stimulation; D014796:Visual Perception; D014828:Vocalization, Animal