Response-Contingent Visual Exposure to Conspecific and Social Influence on Key Pecking in Japanese Quail

Abstract

Operant key pecking was assessed in eight adult male Japanese quail (Coturnix coturnix japonica). Subjects could peck either of two response keys to obtain bird chow reinforcement. In addition, one of the keys controlled visual exposure to conspecifics by altering illumination in a companion compartment adjacent to the subject. One, two, or no companion quail were present. Pecks on the “companion” key started or maintained exposure to companions. Results indicated that (a) subjects reduced significantly the frequency of pecks maintaining companion exposure when companion quail were actually present, (b) cumulative duration of exposure to companions was significantly lower when companions were present, and (c) the overall rate of key pecking was inhibited significantly during exposure to companions. These data contribute to the establishment of a mediating link between observed social inhibition of food-reinforced key pecking and apparent lack of subject preference for visual exposure to conspecifics during operant testing.