本州中部の高山帯に生息するカラスの分布と個体数  [in Japanese] Distribution and Population Size of Crows (Corvus macrorhynchos and C. corone) Inhabiting the Alpine Zone, Central Honshu, Japan  [in Japanese]

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Author(s)

    • 小林 真知 Kobayashi Machi
    • 上越教育大学自然系理科動物生態学研究室 Laboratory of Animal Ecology, Department of Biology, Joetsu University of Education
    • 中村 雅彦 Nakamura Masahiko
    • 上越教育大学自然系理科動物生態学研究室 Laboratory of Animal Ecology, Department of Biology, Joetsu University of Education

Abstract

The distribution and population size of crows inhabiting the alpine zone (above 2,400 m asl), central Honshu, were studied on the basis of published literature, a 2005 questionnaire survey and interviews of the owners of mountain huts. Crows were present at 45 of the 62 high mountains surveyed. The distribution was increased because the crows occurred at 11 mountains before the 1970s. There were 1-4 individuals at each mountain and they were usually observed from May to October when the mountain huts opened. We estimated a total of 156 individuals at the 45 high mountains: most were Jungle Crows (<i>Corvus macrorhynchos</i>). The crows scavenged the food scraps dumped by mountain climbers. Moreover, at some mountains they ate the eggs and chicks of the Rock Ptarmigan (<i>Lagopus mutus</i>), the Alpine Accentor (<i>Prunella collaris</i>), and the House Martin (<i>Delichon urbica</i>). Attention should be paid to the future distribution and diet of crows inhabiting the alpine zone.

Journal

  • Journal of the Yamashina Institute for Ornithology

    Journal of the Yamashina Institute for Ornithology 38(1), 47-55, 2006

    Yamashina Institute for Ornitology

Cited by:  1

Codes

  • NII Article ID (NAID)
    130000446347
  • NII NACSIS-CAT ID (NCID)
    AA11864856
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1348-5032
  • NDL Article ID
    8527555
  • NDL Source Classification
    ZR4(科学技術--生物学--動物)
  • NDL Call No.
    Z18-78
  • Data Source
    CJPref  NDL  J-STAGE 
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