Aussie Finch Forum

3 views of the same bird. Do I have a male or female? What colors should I look for in a mate? I don’t know anything about bloodline or crosses. Thanks

You have a double factor Euro yellow cock bird.
You can mate him to a Euro yellow hen bird or a normal green back hen.
The mutation is sexlinked recessive dominant and you get Euro yellows and normal green back in the young as you can't get split Euro yellows to a normal green back hen.
Mated to a Euro yellow hen all young will be Euro yellows.
When adding white breast it's best to put white breast to white breast in green back or Euro yellow hens.

Thank you so much for your thoughtful reply! I just have one question- I’ve heard you shouldn’t breed white breast to white breast. Is there an exception in my case?

Breeding white breast to white breasted is fine because it is a strong autosomal recessive mutation. The problem is you get splits if you breed a pure purple breasted bird to a white breasted bird that look normal and you sell those young on to someone that only likes purple breasted birds with the hidden gene for white breast. It becomes a little messy.

Thank you for your help. I understand what you are saying.