A general term for birds such as the Anser and Branta genus of Anatidae. It also includes the Cereopsis genus, which lives in southern Australia. Other birds with the name "gan goose" include the Lesser Spotted Geese and the Pea Geese, but these are not included in the general term "geese". All geese recorded in Japan breed in the Northern Hemisphere, but they do not breed in Japan. However, Japan is a very important wintering ground for geese, especially those that breed in eastern Eurasia. Eleven species have migrated to Japan so far: the Brown Goose, Branta, Swan Goose, Great Tit Goose, Canada Goose, Greylag Goose, Snow Goose, Bean Goose, Greater White-fronted Goose, Imperial Goose, and Bar-headed Goose. In recent years, the Bean Goose, Greater White-fronted Goose, and Branta Geese have made up the majority of the population. These species are designated as national natural monuments, and the number of wintering birds, except for the Brant Goose, is very large. (→ Anatidae, migratory birds) gun |
カモ目カモ科のマガン属 Anser,コクガン属 Branta などの鳥の総称。ほかにオーストラリア南部にすむロウバシガン属 Cereopsis なども含まれる。名前にガン gooseのつく鳥はほかにコバシガン類やマメガン類などもあるが,これらはガンと総称される鳥には含めない。日本で記録されたガンはすべて北半球に繁殖分布しているが,日本では繁殖していない。しかし,特にユーラシア大陸東部で繁殖するガンの越冬地として,日本は非常に重要な地域となっている。これまで日本に渡来したことのある種は,カリガネ,コクガン,サカツラガン,シジュウカラガン,カナダガン,ハイイロガン,ハクガン,ヒシクイ,マガン,ミカドガン,インドガンの 11種であるが,近年はヒシクイ,マガン,コクガンがその大部分を占めている。これらの種は国の天然記念物に指定されていて,コクガンを除き越冬数がたいへん多くなっている。(→ガンカモ類,渡り鳥)
ガン
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>>: Goose (gan) - gan (English spelling) goose
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