Geographic variation in bird songs: examination of the effects of sympatric related species on the acoustic structure of songs

@article{Hamao2015GeographicVI,
  title={Geographic variation in bird songs: examination of the effects of sympatric related species on the acoustic structure of songs},
  author={Shoji Hamao and Norimasa Sugita and Isao Nishiumi},
  journal={acta ethologica},
  year={2015},
  volume={19},
  pages={81-90}
}
Birdsong evolution has influenced by various ecological and social factors. When related species that sing similar songs coexist, the acoustic properties of the songs of one or both species may shift, and the songs may diverge. We investigated geographic variation in the songs of the Japanese tit (Parus minor) and the varied tit (Poecile varius) in the Ryukyu Archipelago, Japan, whose islands harbor either one or both species. The songs of the two species exhibited similar structure, but… CONTINUE READING
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