Species can be recognized by their morphological characteristics and songs.
More Quotes from Peter R. Grant:
The process of speciation is completed with the cessation of genetic exchange.Peter R. Grant
The independent role of morphology in mate choice is revealed by the rare instances where the usual association between song and morphology is disrupted.
Peter R. Grant
Islands are known to differ in the food supply available to ground finches, mainly seeds.
Peter R. Grant
Thus the genetic basis to the origin of bird species is to be sought in the inheritance of adult traits that are subject to natural and sexual selection.
Peter R. Grant
Plumage features constitute a major component of courtship signals.
Peter R. Grant
Males transmit signals in courtship through behavioral displays.
Peter R. Grant
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