Sulphur-Crested Cockatoo Colors and Markings Sulphur-crested cockatoos are principally white with black beaks. They sport an attractive crest of yellow feathers on top of their heads. It's a yellow clean over the underside of its wings. Offer the bird loads of space to climb, extend, and flap its wings. https://davidm270mwg7.blogsuperapp.com/profile