A bird of the Anatidae family (illustration). It is found in India and Southeast Asia, northeastern China, and Primorsky Krai. It breeds throughout Japan, but is more common in southern Japan. It is a resident bird, but those in northern Japan migrate south in winter. Total length is about 60 cm. It is a large species of duck, on a par with the mallard, in Japan. Its plumage is black-brown all over with a light wavy pattern. Its distinctive features are two black-brown lines on its whitish face, white spots on its tertiary flight feathers, and orange-red legs, as well as a black beak with a yellow tip. Unlike many other ducks, the sexes of this species are the same color. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
カモ目カモ科の鳥(イラスト)。インドおよび東南アジアから中国東北部,沿海州まで分布する。日本では全国で繁殖しているが,南日本に多い。留鳥だが,北日本のものは冬季は南へ移動する。全長約60cm。日本のカモ類の中ではマガモと並ぶ大型種である。羽色は全身黒褐色で淡色の波模様がある。白っぽい顔にある2本の黒褐色線と,三列風切羽の白斑,それに橙赤色の脚が目だち,黒いくちばしの先端が黄色いのが特徴。この種は他の多くのカモ類と異なり雄雌同色である。
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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