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''Cacatua'' is a genus of cockatoos found from the Philippines and Wallacea east to the Solomon Islands and south to Australia. They have a primarily white plumage (in some species tinged pinkish or yellow), an expressive crest, and a black (subgenus ''Cacatua'') or pale (subgenus ''Licmetis'') bill. Today several species from this genus are considered threatened due to a combination of habitat loss and capture for the wild bird trade, with the blue-eyed cockatoo, Moluccan cockatoo and umbrella cockatoo considered Vulnerable, and the red-vented cockatoo and yellow-crested cockatoo considered Critically Endangered. The genus was first described by Brisson in 1790, with the white cockatoo (''Cacatua alba'') subsequently designated as the type species. Georges Cuvier defined the genus ''Kakatoe'' in 1800, with the red-vented cockatoo (''C. haematuropygia'') as the type, and some older bird books use the latter name. Mayr, Keast and Serventy validated ''Cacatua'' in 1964, and dismissed ''Kakatoe''. ==Species== * Subgenus ''Cacatua'' - true white cockatoos * *Yellow-crested (or lesser sulphur-crested) cockatoo, ''Cacatua (Cacatua) sulphurea'' * *Sulphur-crested cockatoo, ''Cacatua (Cacatua) galerita'' * *Blue-eyed cockatoo, ''Cacatua (Cacatua) ophthalmica'' * *White (or umbrella) cockatoo, ''Cacatua (Cacatua) alba'' * *Salmon-crested (or Moluccan) cockatoo, ''Cacatua (Cacatua) moluccensis'' * Subgenus ''Licmetis'' - corellas * *Long-billed corella, ''Cacatua (Licmetis) tenuirostris'' * *Western corella, ''Cacatua (Licmetis) pastinator'' * *Little corella, ''Cacatua (Licmetis) sanguinea'' * *Tanimbar corella (or Goffin's cockatoo), ''Cacatua (Licmetis) goffiniana'' * *Solomons cockatoo (or Ducorps's cockatoo), ''Cacatua (Licmetis) ducorpsii'' * *Red-vented (or Philippine) cockatoo, ''Cacatua (Licmetis) haematuropygia'' 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「Cacatua」の詳細全文を読む スポンサード リンク
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