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Genus Donacobius
Black-capped Donacobius - The Black-capped Donacobius is the only member of the genus Donacobius. Its familial placement is not established, and ornithologists disagree as to its closest relations. In the 19th century, it was placed in the Turdidae, and in the 20th century, moved to the Mimidae. It had various English names, including the "Black-capped Mockingthrush". In the 1980s and 1990s, suggestions that it was a type of wren were accepted by the South American Classification Committee , the American Ornithologists Union and most other authorities. More recently, listing organizations and authors follow Van Remsen and Keith Barker's conclusion that it is not a wren either, but instead most closely related to an Old World lineage.