Umbrella Cockatoos are entirely white at first glance. However, if you startle or excite one, you will see the feathers of its crest pop up, forming a type of “headdress” resembling an umbrella. This is where their name comes from. Under their “umbrella,” the feathers are bright yellow. The underside of their wings and tail is also yellow. They have a bare patch of skin around their eyes which is blue in color. This patch of skin can sometimes help determine an Umbrella’s age since, like humans, this area tends to wrinkle as the birds get older.