A medium cockatoo; 45-55 cm TL; 815-975 g; sexes are alike in appearance. Head and neck: white; crest when erected long, curving forward, yellow;
distinct characteristic of crest on head that can be erected or folded down; eye dark brown (male), red brown (female); bill dark grey to black.
Body: Overall white; underwing pale yellow.
Limbs and tail: Legs and feet grey; tail white; tail underside pale yellow.