Greater Sulphur-crested Cockatoos (Cacatua galleria) are the largest of the Sulphur-crested group. They have a dark grey-black bill, a distinctive sulphur-yellow crest and a yellow wash on the underside of the wings. Greater Sulphur-crested Cockatoos can live upwards of 60 years. The Sulphur-crested Cockatoo lives in wooded habitats in Australia and New Guinea and some of the islands of Indonesia. The popularity of the Sulphur-crested Cockatoo as a cage bird has increased its range, as these birds either escape or are released in areas where they do not already occur.