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<div style="float:left;margin:0.5em 0.9em 0.4em 0;">[[File:Eolophus roseicapilla -Wamboin, NSW, Australia -adult-8-2cp.jpg|100px|An adult Rose-breasted Cockatoo in Wamboin, Australia]]</div>

A '''[[cockatoo]]''' is any of the 21 [[species]] belonging to the bird [[family (biology)|family]] Cacatuidae. Along with the Psittacoidea ([[true parrots]]) and the Strigopoidea (large [[New Zealand parrot]]s), they make up the parrot [[order (biology)|order]] Psittaciformes. Cockatoos are instantly recognisable by their showy [[Crest (feathers)|crests]] and curved [[beak|bills]]. Their [[plumage]] is generally less colourful than that of other parrots, being mainly white, grey, or black, and often with coloured features in the crest, cheeks, or tail. On average they are larger than other parrots. Cockatoos prefer to eat seeds, [[tubers]], [[corms]], fruit, flowers and insects. They often feed in large flocks, particularly when ground-feeding. Cockatoos are [[monogamy|monogamous]] and nest in [[tree hollow]]s. Some cockatoo species have been adversely affected by [[habitat loss]], particularly from a shortage of suitable nesting hollows after large mature trees are cleared; conversely, some species have adapted well to human changes and are considered agricultural [[pest (organism)|pest]]s. Cockatoos are popular birds in [[aviculture]], but their needs are difficult to cater for. The Cockatiel is the cockatoo species that is easiest to care for and is by far the most frequently kept in captivity. ([[cockatoo|'''more...''']])

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