Common golden-eye duck (English spelling)

Japanese: ホオジロガモ(頰白鴨) - ホオジロガモ（英語表記）common golden‐eye

A bird of the Anatidae family (illustration). It breeds in the subarctic and north of the Northern Hemisphere and winters in temperate regions. It migrates to Japan as a winter bird. It mainly lives in the sea, such as bays, inlets, and estuaries in northern Japan, but can sometimes be seen in freshwater lakes and ponds. It dives using its feet and wings to eat shellfish attached to rocks. The male is about 47 cm long. The sexes are different, with males having a black-green head and back and a white body. It got its name from a large, prominent white spot on its cheek. The female has a brown head, a rich brown back, and a gray band on her chest.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

カモ目カモ科の鳥（イラスト）。北半球の亜寒帯以北で繁殖し，温帯地方で越冬する。日本には冬鳥として渡来する。おもに北日本の湾や入江，河口など海上にすむが，淡水の湖沼でもときどき見かける。足と翼を使って潜水し，岩についている貝類を食べている。全長雄は約47cm。雌雄異色で，雄は頭と背が黒緑色，体は白色である。ほおによく目だつ大きな白斑があるのでこの名がある。雌は頭部が茶褐色，背も褐色に富み，胸に灰色の帯がある。

出典　株式会社平凡社世界大百科事典第２版について　情報

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