2010 $5 Little Dinkums Kato Cockatoo 1/25oz Gold Proof CoinGDay! My name is Kato and Im a cockatoo. I come from a big family; there are 13 different cockatoo varieties in Australia. Were all large parrots and range in colour from brilliant white and yellow to shiny black and red. You can tell Im a Cockatoo from the crest on my head, which I display when Im frightened or excited. Brought to life in cartoon style, Kato is part of the charming gold proof series Little Dinkums.