A general term for birds in the family Gaviidae (loons), or one of these species. Loons live on coasts, inland bays, and river mouths, and mainly feed by diving to eat fish. They are about 60-90 cm long. Adapted for a diving lifestyle, they have a long, slender body, a thick neck, and short, tapered wings compared to their body. They have a short tail. Their legs are located at the very back of their bodies, and their toes are webbed. They have straight, pointed beaks. In addition to fish, they feed on aquatic insects and frogs, and in the sea they feed on marine invertebrates such as crustaceans and mollusks. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
アビ目アビ科Gaviidaeの鳥の総称,またはそのうちの1種を指す。アビ科の鳥は沿岸や内湾,河口などにすみ,潜水しておもに魚類を食べる。全長は約60~90cm。潜水生活に適応して,体は細長く,くびは太く,翼は体に比べて短く先が細い。尾は短い。脚は体のもっとも後方につき,あしゆびには水かきがある。くちばしはまっすぐでとがっている。魚類のほかに水生昆虫やカエル,また海では甲殻類や軟体動物など海産無脊椎動物を餌にする。
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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