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Song Ranging by the Dusky Antbird, Cercomacra tyrannina: Ranging without Song Learning
Eugene S. Morton and Kim C. Derrickson
Behavioral Ecology and Sociobiology
Vol. 39, No. 3 (1996), pp. 195-201
Published by: Springer
Stable URL: http://www.jstor.org/stable/4601252
Page Count: 7
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In a population of dusky antbirds (Cercomacra tyrannina), less aggressive responses to distance-degraded playbacks than to undegraded playbacks of pair duets show that this tropical suboscine passerine uses sound degradation to range distance from singing conspecifics. This is the first example of song-ranging in a species that does not learn songs, supporting the hypothesis that ranging preceded the song learning that occurs in more recently evolved passerine birds (oscines). Both sexes sing and are able to use song degradation to range distance from singers when their sex-specific song is played back.
Behavioral Ecology and Sociobiology © 1996 Springer