ML51263

影音備註

NOTES: Identified by Dan Gibson; Bird attracted and induced to sing by playback of its own song as well as without inducement or playback. First 2 calling bouts. When the playback occurred this bird came down near the source of the sound and acted as if it was chalenging the recorded calls and defending its territory; Behavior accompanying vocalization: calling ocurred while perched on dead branches of large Aspen trees; When not vocalizing, bird was perched on dead branches and feeding on flying insects. Sound stimulation was (other): see notes.