Australian birds black cockatoo Carnaby black cockatoo cockatoo endangered large protected short-billed threatened Western Australian white cheek patches white tail panels ruffled ruffled feathers aviculture beak bird black body bright cacatua-galerita caged captive colors colours conspicuous crest curled curling curved-beak dark-grey-black-bill distinctive eye feathers fluffy head iconic intelligent mimicry Noisy numerous parrot plumage popular powerful screeching strong sulphur-crested white wings yellow