Need Help to ID Gouldian Mutation

[deegs]

What outstanding birds these are, the cock is simply stunning, very envious!! I'll be running some Aussie Yellows paired with normals next autumn, would be very happy to have your success. Cheers.

[finchbreeder]

Aussie yellow x normal = split. With luck your babies will have yellow or white spots on the back of the head or under the chin. Ring them to keep track of them. Enjoy.
LML