A general term for birds of the heron family. They are water birds with a wingspan of 12-50cm and long beaks, legs and necks. There are about 60 species distributed throughout the world. Eighteen species live in Japan. They feed on fish and crayfish in rice fields and rivers. Some species build their nests on tree branches and others in reed beds. Some species breed in groups, and breeding sites for groups of grey herons, great egrets, intermediate egrets, little egrets, black-crowned night herons, Japanese bitterns and reed bitterns are known all over Japan, and some are designated as natural monuments. Source : Heibonsha Encyclopedia About MyPedia Information |
サギ科の鳥の総称。翼長は12〜50cmで,くちばしや脚,頸(くび)の長い水辺の鳥。全世界に分布し,約60種。日本には18種がすむ。水田や川で魚,ザリガニなどを食べる。巣を木の枝の上に作るものとヨシ原に作るものとがある。種類によっては集団繁殖し,日本でもアオサギ,ダイサギ,チュウサギ,コサギ,ゴイサギ,ササゴイ,ヨシゴイなどの集団繁殖地が各地で知られ,あるものは天然記念物に指定されている。
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