Song as a reinforcer in the white-crowned sparrow.
D000161:Acoustic Stimulation; D000818:Animals; D001307:Auditory Perception; D001717:Birds; D005260:Female; D006185:Habituation, Psychophysiologic; D008297:Male; D009043:Motor Activity; D009622:Noise; D012054:Reinforcement, Psychology; D012201:Reward; D012737:Sex Factors; D013045:Species Specificity; D014828:Vocalization, Animal