A bird of the Anatidae family (illustration). It breeds from Europe to northern China, and migrates to North Africa, India, southern China, and other areas in winter. It is a rare winter bird in Japan, living on the broad tidal flats of the coast. It can be seen regularly in the Ariake Sea off Kyushu, but is now extremely rare outside Kyushu. It feeds on crustaceans and mollusks on the tidal flats at low tide. It stretches its neck and holds its beak perpendicular to the ground when eating, making it more similar to geese than ducks. Unlike other ducks, it builds its nests in holes in the ground that are used by hares and foxes, or that are natural. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
カモ目カモ科の鳥(イラスト)。ヨーロッパから中国北部にかけて繁殖し,冬期には北アフリカ,インド,中国南部などに渡る。日本では数の少ない冬鳥で,広い干潟の海岸に生息する。九州の有明海では定期的に見られるが,九州以外の地方では現在きわめてまれである。潮の引いた干潟で甲殻類,軟体動物などを食べる。食べるときにくびをのばしくちばしを地面に垂直にするように使うので,カモ類よりガン類の姿に似る。他のカモ類と異なり,ノウサギ,キツネなどが使った,あるいは天然の地中の穴の中に巣をつくる。
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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