Bezold-Brücke hue shift functions for the pigeon.
D000818:Animals; D003116:Color; D003118:Color Perception; D010856:Columbidae / Q000502:physiology*; D004192:Discrimination, Psychological; D006801:Humans; D010775:Photic Stimulation; D012054:Reinforcement, Psychology; D013053:Spectrophotometry