The yellow-tailed black cockatoo is a fairly common sight in forests along southeast Australia and Tasmania. They typically perch, roost and nest in old eucalyptus, an abundant tree in the Blue Mountains. This cockatoo’s distinctive characteristic accenting its brown-black plumage is a yellow cheek patch. The white beak indicates this is a female. Males have black beak. The parrot tends to measure 22 to 26 inches with a foot long tail. While you are hiking, you will soon recognize their shrill call sounding like “kee-ow.”