A general term for birds of the Heronidae family that are entirely white. White-colored Great Egrets, Intermediate Egrets, Little Egrets, and Japanese Egrets live in Japan, and the species can also include the Cattle Egret (whose head and chest are orange during the breeding season) that lives outside of the breeding season. Another rare migratory bird is the Chinese Egret (Near Threatened (Ministry of the Environment's 4th Red List)). They build nests in groups in bamboo and pine forests in the lowlands south of Honshu. Intermediate Egrets travel south for the winter, but many Little Egrets and Great Egrets remain in Japan during the winter. They mainly eat animal matter such as American crayfish and small fish in wetlands and rivers. Source : Heibonsha Encyclopedia About MyPedia Information |
サギ科の鳥のうち全身白色のものの総称。日本にはダイサギ,チュウサギ,コサギ,クロサギの白色形がすみ,他に繁殖期以外のアマサギ(繁殖期では頭や胸がオレンジ色)を含めることもある。ほかにまれな旅鳥としてカラシラサギ(準絶滅危惧(環境省第4次レッドリスト))が渡来する。本州以南の低地の竹や松の林に集団で巣を作る。チュウサギは冬南方へ去るが,コサギとダイサギには冬日本に残る個体も多い。湿地や川でアメリカザリガニ,小魚等,おもに動物質を食べる。
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