A cockatoo is any of the 21 species belonging to the bird family Cacatuidae.
See also:
Bare-eyed cockatoo (Cacatua sanguinea)
Citron-crested cockatoo (Cacatua sulphurea citrinocristata)
Goffin's cockatoo / Goffin's corella / Tanimbar corella (Cacatua goffiniana)
Major Mitchell's cockatoo (Lophochroa leadbeateri)
Moluccan cockatoo / salmon-crested (Cacatua moluccensis)
Sulphur-crested cockatoo (Cacatua sulphurea) also known as the lesser yellow-crested cockatoo
Roseate cockatoo / Galah Cockatoo / rose-breasted cockatoo (Eolophus roseicapillus)
Umbrella cockatoo (Cacatua alba)