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COCKATOO (Cacatuidae)

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Originally appearing in Volume V06, Page 622 of the 1911 Encyclopedia Britannica.
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COCKATOO (Cacatuidae) , a See also:family of parrots characterized among Old See also:World forms by their usually greater See also:size, by the See also:crest of feathers on the See also:head, which can be raised or depressed at will, and by the See also:absence of See also:green in their coloration. They inhabit the See also:Indian See also:Archipelago, New See also:Guinea and See also:Australia, and are gregarious, frequenting See also:woods and feeding on seeds, fruits and the larvae of See also:insects. Their See also:note is generally harsh and unmusical, and although they are readily tamed when taken See also:young, becoming See also:familiar, and in some See also:species showing remarkable intelligence, their See also:powers of vocal See also:imitation are usually limited. Of the true cockatoos (Cacatua) the best known is the See also:sulphur-crested cockatoo (Cacatua galerita), of a pure See also:white plumage with the exception of the crest, which is deep sulphur yellow, and of the See also:ear and tail coverts, which are slightly tinged with yellow. The crest when erect stands 5 in. high. These birds are found in Australia in flocks varying from See also:loo to r000 in number, and do See also:great damage to newly-sown See also:grain, for which See also:reason they are mercilessly destroyed by farmers. They See also:deposit their eggs—two in number, and of a pure white colour—in the hollows of decayed trees or in the fissures of rocks, according to the nature of the locality in which they reside. This is one of the species most usually kept in See also:Europe as a cage See also:bird. Leadbeater's Cockatoo (Cacatua Leadbeateri), an inhabitant of See also:South Australia, excels all others in the beauty of its plumage, which consists in great See also:part of white, tinged with See also:rose See also:colour, becoming a deep See also:salmon colour under the wings, while the crest is See also:bright See also:crimson at the See also:base, with a yellow spot in the centre and white at the tip. It is exceedingly shy and difficult of approach, and its note is more plaintive while less harsh"than that of the preceding species. In the cockatoos belonging to the genus Calyptorhynchus the See also:general plumage is See also:black or dark See also:brown, usually with a large spot or See also:band of red or yellow on the tail. The largest of these is known as the funereal cockatoo (Calyptorhynchus funerals), from the lugubrious note or See also:call which it utters, resembling the two syllables Wy—la,—, the native name of the species.

It deposits its eggs in the hollows of the large See also:

gum-trees of Australia, and feeds largely on the larvae of insects, in See also:search of which it peels off the bark of trees, and when thus employed it may be approached closely. The cockateel (Calopsittacus novaehollandiae), the only species in the family smaller than a See also:pigeon, and with a See also:long pointed tail, is a See also:common See also:aviary bird, and breeds freely in captivity.

End of Article: COCKATOO (Cacatuidae)

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