Cockatoos are recognisable by the showy crests
and curved 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; however, the Cockatiel
, the smallest cockatoo species, is a small bird.
From Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Cacatuidae