Syllable Sharing among North American Populations of the Eurasian Tree Sparrow
The nest advertisement and defense song of the Eurasian Tree Sparrow (Passer montanus) was examined for evidence of syllable sharing among populations. Twenty Eurasian Tree Sparrows were introduced into North America at St. Louis, Missouri in 1870 (Widmann 1889). The population subsequently expanded...
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Veröffentlicht in: | The Condor (Los Angeles, Calif.) Calif.), 1987-11, Vol.89 (4), p.746-751 |
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