Contact calls are used for individual mate recognition in free-ranging green-rumped parrotlets, Forpus passerinus

  title={Contact calls are used for individual mate recognition in free-ranging green-rumped parrotlets, Forpus passerinus
  author={Karl S. Berg and Soraya Delgado and Rae Okawa and Steven R. Beissinger and Jack W. Bradbury},
  journal={Animal Behaviour},

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