International Journal of Comparative Psychology
Perception of Species-specific Vocalizations by Isolate-reared Buegerigars (Melopsittacus undulatus)
- Author(s): Dooling, Robert J
- Park, Thomas J
- Brown, Susan D
- Okanoya, Kazuo
- et al.
Budgerigars were trained with operant conditioning procedures to discriminate among sets of calls from several species in a Same-Different task. Response latencies from this task were analyzed in several ways including multidimensional scaling (MDS) and cluster analysis. The pattern of response latencies from budgerigars reared in a large group of conspecifics was compared to that of budgerigars reared in acoustic and social isolation. Results show that budgerigars with previous experience with species-specific vocalizations and isolate-reared birds who had never heard such sounds can both discriminate among the categories of species-specific vocal signals. But, results from MDS and cluster analysis also show that rearing budgerigars in isolation has subtle effects on the perception of these categories of vocal signals.