Yellow... Yellow-tailed Black Cockatoo

I've posted previously about a red mutation African Grey breeding in South Africa - now it's time for an Australian example. Whilst I'm not a keeper of mutation parrots myself, pure bred (non-hybridised) examples of colour mutations in parrots are certainly fascinating from a genetics study. A buddy of mine recently bred a particularly stunning example of what happens when those alleles throw out something out of the ordinary. The image below is of a mutation Yellow-tailed Black Cockatoo (Calyptorhynchus funereus). First bred in captivity in Australia? I'm not sure - I forgot ask! Too busy getting over how completely off the richter this thing looks compared to a `normal' version...