The Red-tailed Black Cockatoo (photo is a female which has yellow tail feathers) is a large cockatoo native to Australia where they live mostly in the continent's N drier areas. Males have red tail feathers; females, yellow. Both have blue-black heads w white dots. They nest in tree hollows, esp. in Eucalyptus woodlands near water. They often travel in large flocks. Diet: seeds, nuts, berries, fruits, insects.