Sexual differences in species recognition of avian song

  title={Sexual differences in species recognition of avian song},
  author={William A Searcy and Eliot A Brenowitz},
Studies of species recognition in male birds have often identified features that are distinctive, invariant markers of a species song but which can be altered without altering male response1–4. Such results raise the question of why natural selection has favoured the retention of these features in the song. We propose that such features are favoured by selection because females use them in species recognition even though males do not. There are excellent theoretical grounds for expecting that… CONTINUE READING

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