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Helmeted woodpecker
The helmeted woodpecker (''Dryocopus galeatus'') is a species of bird in the family Picidae. It has been recorded from Argentina, Brazil, and Paraguay, but has all but vanished from the latter two countries. Its habitat is subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests. It is threatened by habitat loss.
==Taxonomy==
Coenraad Jacob Temminck described the helmeted woodpecker in 1822. Its specific epithet is from the Latin word ''galea'', meaning "helmet". It was reclassified as ''Hylatomus galeatus'' by some authorities, but has remained as ''Dryocopus galeatus'' on the IOC world bird list. Short held it to be intermediary between genera ''Dryocopus'' and ''Celeus''. Upon sequencing the mitochondrial and nuclear DNA, Martjan Lammertink and colleagues found that it lay genetically with the latter genus and proposed the name ''Celeus galeatus''.
Its genetic position indicates that it has evolved to mimic the lineated woodpecker (''Dryocopus lineatus''), whose range it shares, by adopting similar plumage.
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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