Cockatoos

(Family Cacatuidae)

Eleven of Australia’s 14 species are endemic, with the others shared with New Guinea. Medium to large crested birds, except the Cockatiel Nymphicus hollandicus is more slender and parrot-like, with two toes facing forwards and two facing rearwards (zygodactylous). Many form noisy flocks, which can consist of several hundred individuals in some species.