Potentiation instead of overshadowing in the pigeon.
D000818:Animals; D001245:Association Learning; D001362:Avoidance Learning; D002755:Choice Behavior; D003118:Color Perception; D010856:Columbidae; D003214:Conditioning, Classical; D003463:Cues; D004326:Drinking; D005108:Extinction, Psychological; D008297:Male; D013649:Taste; D014796:Visual Perception