caa a22 4500 465782914 CHVBK 20180323112000.0 cr unu---uuuuu 170327e19900801xx s 000 0 eng 10.1007/BF00168455 doi (NATIONALLICENCE)springer-10.1007/BF00168455 Use of the song repertoire in intersexual and intrasexual contexts by male red-winged blackbirds [Elektronische Daten] [William Searcy, Ken Yasukawa] Summary: Live and stuffed male and female red-winged blackbirds (Agelaius phoeniceus) were presented to territorial males in order to study the repertoire organization of males during intersexual and intrasexual encounters. Territorial male red-winged blackbirds switched song types more frequently and sang more song types in response to presentation of a female stimulus than during control periods, but decreased their switching frequency when a male stimulus was presented. Switching frequency in response to the female stimulus was three times that in response to the male stimulus. These results support the hypothesis that song repertoires of male red-winged blackbirds evolved primarily in response to intersexual rather than intrasexual selection. They also suggest that male red-winged blackbirds have been selected to de-emphasize their song repertoires during encounters with conspecific males as a result of some as yet unidentified cost. Springer-Verlag, 1990 Searcy William Department of Biological Sciences and Pymatuning Laboratory of Ecology, University of Pittsburgh, 15260, Pittsburgh, PA, USA aut Yasukawa Ken Department of Biology, Beloit College, 700 College Street, 53511, Beloit, WI, USA aut Behavioral Ecology and Sociobiology Springer-Verlag 27/2(1990-08-01), 123-128 0340-5443 27:2<123 1990 27 265 https://doi.org/10.1007/BF00168455 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00168455 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Searcy William Department of Biological Sciences and Pymatuning Laboratory of Ecology, University of Pittsburgh, 15260, Pittsburgh, PA, USA aut NATIONALLICENCE 700 1- Yasukawa Ken Department of Biology, Beloit College, 700 College Street, 53511, Beloit, WI, USA aut NATIONALLICENCE 773 0- Behavioral Ecology and Sociobiology Springer-Verlag 27/2(1990-08-01), 123-128 0340-5443 27:2<123 1990 27 265 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer