Palm cockatoo
It may be the largest cockatoo species and largest parrot in Australia. This powerful bill enables palm cockatoos not only to eat very hard nuts and seeds, but also enables males to break off thick (about 1 in) sticks from live trees to use for a drumming display. The palm cockatoo also has a distinctive red cheek patch that changes colour when the bird is alarmed or excited. The palm cockatoo has a large and complex vocal repertoire, including many whistles and even a "hello" call that sounds surprisingly human-like.
