I first came to know the gang-gang cockatoo when I watched a PBS special. The females have light grey crests while the males have those wacky red crests. Something about their colors and the texture just reminds me of punk bikers. I find it hilarious that nature has made some "biker" looking creatures. The term "Gang-Gang" suits these perfectly. They are native to the southeastern area of Australia in the more temperate forests. Wikipedia does not have much written on these creatures.
There is even an actual villa/cottage area in Australia where you can go and be in contact with the birds. http://ganggangvillas.com.au/