Article
Genetic population structure and call variation in a passerine bird, the satin bowerbird, Ptilonorhynchus violaceus.
Evolution; international journal of organic evolution - 1 Jun 2006
Nicholls J A, Austin J J, Moritz C, Goldizen A W
Abstract excerpt
Geographic variation in vocalizations is widespread in passerine birds, but its origins and maintenance remain unclear. One hypothesis to explain this variation is that it is associated with geographic isolation among populations and therefore should follow a vicariant pattern similar to that typically found in neutral genetic markers. Alternatively, if environmental selection strongly influences vocalizations,...
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