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marsh warbler
The marsh warbler (''Acrocephalus palustris'') is an Old World warbler currently classified in the family Acrocephalidae. It breeds in temperate Europe and western Asia and winters mainly in south east Africa. It is notable for incorporating striking imitations of a wide variety of other birds into its song.
The marsh warbler breeds in a variety of mostly damp habitats, but in Africa winters mainly in dry, well-vegetated areas. It is common over much of its breeding range and expanding its distribution in some areas. However, in Britain it is now virtually extinct as a breeding bird.〔British Trust for Ornithology, (BirdFacts: Marsh Warbler ) accessed 21 February 2010.〕 This insectivorous warbler can be easily confused with several close relatives, but the imitative song of the male is highly distinctive.
==Description and taxonomy==
This is a medium-sized warbler. It is very similar in appearance to several other acrocephaline warblers, such as the reed warbler which also occurs in wetlands and has a similar breeding range. The male's distinctive song is useful for identification, as no other member of the genus mimics other birds to any significant extent. The marsh warbler also tends to avoid the stands of pure reed which are the reed warbler's favoured habitat.
The species is monotypic, and there is no significant geographical variation. The sexes are alike in appearance. Hybridisation with both reed warbler and Blyth's reed warbler has been occasionally recorded.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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