作者: TORBEN DABELSTEEN , PETER K. McGREGOR , HELENE M. LAMPE , NAOMI E. LANGMORE , JO HOLLAND
DOI: 10.1080/09524622.1998.9753385
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摘要: ABSTRACT The theory of communication networks offers functional arguments for the evolution unobtrusive signals in birds. vulnerability interacting conspecifics to predation and eavesdropping by neighbours during both territorial disputes courtship would select short range such as quiet songs In addition suggesting contexts which should be used, we use our knowledge physics sound transmission make predictions about physical structure relative well studied full songs. We present support these six species where singing has been observed.