…(4) Somateriini: A group that breeds in the far north of the Northern Hemisphere. Four species are known, and two species, the common eider (illustration) and the common eider, have been recorded in Japan. (5) Aythyini: A typical diving duck for feeding, so named because of the white stripes on its wings. They live in bays, estuaries, and large lakes and marshes. … *Some of the terminology that mentions "Aythyini" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…(4)ケワタガモ類Somateriini北半球の極北地域に繁殖するグループで4種が知られており,日本ではケワタガモ(イラスト)とコケワタガモの2種が記録されている。(5)ハジロガモ類Aythyini代表的な潜水採餌ガモで,翼に白色帯が出ることからこの名がある。海湾や河口,大きな湖沼にすむ。… ※「Aythyini」について言及している用語解説の一部を掲載しています。 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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