I have seen the result of a mating between two very different Ozzie birds, the galah (largish pink and grey bird) and sulphur crested cockatoo (larger, white with yellow crest). The cockalah's body was mottled grey and white feathers and the head was orange, obviously the mixing of the galah's pink head and the cockatoo's yellow crest. Although unusual it was quite striking, I reckon there could be a market for those birds.

The woman who owned it (it lived in a pet shop) said it was the result of a mating between two very frustrated birds who both lived in captivity.

Cheers
JennieG