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The common moorhen (''Gallinula chloropus'') (also known as the swamp chicken〔) is a bird species in the family Rallidae. It is distributed across many parts of the Old World.〔 The common moorhen lives around well-vegetated marshes, ponds, canals and other wetlands. The species is not found in the polar regions or many tropical rainforests. Elsewhere it is likely the most common rail species, except for the Eurasian coot in some regions. The closely related common gallinule of the New World has been recognized as a separate species by most authorities,〔 starting with the American Ornithologists' Union and the International Ornithological Committee in 2011.〔 ==Name== The name ''mor-hen'' has been recorded in English since the 13th century.〔 The word ''moor'' here is an old sense meaning ''marsh'';〔 the species is not usually found in moorland. An older name, common waterhen, is more descriptive of the bird's habitat. A "watercock" is not a male "waterhen" but the rail species ''Gallicrex cinerea'', not closely related to the common moorhen. "Water rail" usually refers to ''Rallus aquaticus'', again not closely related. The scientific name ''Gallinula chloropus'' comes from the Latin ''Gallinula'' (a small hen or chicken) and the Greek ''chloropus'' (''khloros'' χλωρός green or yellow, ''pous'' πούς foot).〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Common moorhen」の詳細全文を読む スポンサード リンク
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