The yellow-crested cockatoo (Cacatua sulphurea) also known as the lesser sulphur-crested cockatoo, is a medium-sized (approximately 34 cm long) cockatoo with white plumage, bluish-white bare orbital skin, grey feet, a black bill, and a retractile yellow or orange crest. The sexes are similar. Lessor, the cockatoo used in the TV series Baretta, is thought to be a yellow-crested cockatoo but is actually a medium sulphur-crested cockatoo.