Breeding behavior of the Japanese Leaf Warbler <i>Phylloscopus xanthodryas</i>

  • KANEKO Takahito
    Department of Life Science, Rikkyo University
  • MORIMOTO Gen
    Department of Life Science, Rikkyo University Division of Avian Conservation, Yamashina Institute for Ornithology Wildlife Conservation Center, Department of Life Sciences, Toho University
  • UEDA Keisuke
    Department of Life Science, Rikkyo University

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  • メボソムシクイ<i>Phylloscopus xanthodryas</i>の雌雄の繁殖回数と給餌分担
  • メボソムシクイPhylloscopus xanthodryasの雌雄の繁殖回数と給餌分担
  • メボソムシクイ Phylloscopus xanthodryas ノ シユウ ノ ハンショク カイスウ ト キュウジ ブンタン

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Abstract

The Japanese Leaf Warbler Phylloscopus xanthodryas is a common summer visitor to high montane areas of Japan, yet basic information on its breeding behavior remains unclear. In this paper, we report that it breeds twice per breeding season (n = 2), and that there is variation in the sharing of food provisioning between the parents of 10-12 day old nestlings. Two nests were cared for only by females. Parental food provisioning showed great variation. These observations are based on individual identification by means of unique color rings and DNA sexing during five breeding seasons.

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