Differences in habitat, height, and flock size between Large-billed Crow and Carrion Crow

• Hirobe Hiroyuki

  Hakodate campus, Faculty of Education, Hokkaido University of Education

• Fujioka Kento

  Hakodate campus, Faculty of Education, Hokkaido University of Education

• Mikami Osamu

  Hakodate campus, Faculty of Education, Hokkaido University of Education

Bibliographic Information

Other Title

• カラス2 種の生息環境，利用空間の高さ，および行動個体数の違い

Abstract

Previous studies have shown that habitat preferences differ between Large-billed Crow Corvus macrorhynchos (formerly known as the Jungle Crow) and Carrion Crow C. corone in Japan. In this study, we observed the two species and identified the number of individuals observed in flocks, the heights above ground at which they perched and flew, the frequency of occurrence in four general habitat types in Hakodate (urban, agricultural, coastal, and mountains), and the variation of those observations among four seasons. Carrion Crows were observed to be more abundant in agricultural areas, and Large-billed Crows were more abundant in mountainous areas. Large-billed Crows were observed in flocks more frequently, and were observed to perch and fly higher than Carrion Crows.

Journal

• Bird Research

  Bird Research 17 (0), A21-A29, 2021

  Japan Bird Research Association

Keywords

• habitat selection
• urban birds
• garden birds
• Corvid

Details

• CRID: 1390288480071228928
• NII Article ID: 130008057018
• DOI: 10.11211/birdresearch.17.a21
• ISSN: 18801595
• ISSN: 18801587
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed