北海道の低地におけるホシガラスの越冬

DOI

書誌事項

タイトル別名
  • Wintering of Nutcrackers at Low Altitudes in Hokkaido

抄録

One to three Nutcrakers Nucifraga caryocatactes were observed in residential areas and wood islands of suburban areas in Obihiro City and its environs, central Hokkaido, from mid-October 1988 to late June 1989. Besides, Nutcrackers were recorded from Hakodate, Sapporo and Furano from October 1988 to mid-June 1989. Poor cone production of the Japanese Stone Pine Pinus pumila in 1988 was considered to be one of causes of their wintering at low altitudes.

収録刊行物

詳細情報 詳細情報について

  • CRID
    1390282679457388544
  • NII論文ID
    130003564534
  • DOI
    10.3838/jjo.38.104
  • ISSN
    18819710
    0913400X
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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