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Island thrush
The island thrush (''Turdus poliocephalus'') is a common forest bird in the thrush family. Almost 50 subspecies have been described, ranging from Taiwan, through South East Asia and Melanesia, to Samoa, exhibiting great differences in plumage. Several subspecies are threatened and three have already become extinct.
==Taxonomy==
The island thrush is a member of the cosmopolitan genus ''Turdus'' (Linnaeus, 1758), one of the most widely distributed bird genera in the world. The taxonomy of the island thrush is complex, and has defied attempts to split the group based on the four suspected morphological types. The subspecies ''Turdus poliocephalus niveiceps'' from Taiwan represents the most distinct taxon and may be a separate species. This subspecies lives at the northerly range of the species, and is the only one in which the males and females differ in colour. There are also thought to be at least two further subspecies not yet described scientifically, both from the Indonesian island of Sulawesi.
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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