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Isolated male red-winged blackbirds develop abnormal songs. Some normal components are delivered with abnormal order and timing. Two males deafened at about 10 days of age develop highly abnormal songs, although they retain more structure than other early-deafened songbirds. In masking noise from 8 to 330 days, one individual sings like a deaf bird.next term With reduced periods of masking singing is more like that of intact previous termbirds.next term Playback of normal song results in imitation. Individual isolates are unselective in learning both conspecific and Baltimore oriole song. Grouped males are more selective. New songs are added in the second year. Improvisation is important in redwing song development...
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