Can european yellow be split to Australian yellow??

[TheFinchMan101]

I have this european yellow gouldian finch cock and was wondering if they can Be split to Australian yellow?? I was wondering this because on the back of his neck he has a real bright yellow spot there compared to the rest of his yellow back. Does anyone know of this ???

[finchbreeder]

I am by no means an expert on Gouldian Genetics. But believe that these are 2 mutations that can coexist in the one bird.
LML

[TheFinchMan101]

hmm ok im just a little bit confused now

[POLAR GOULDIANS]

Hi FM101,
Yes they can be as the " European Yellow " is a sex linked gene whereas the Aust Yellow is a recessive gene. I have a sex linked yellow cock bird which is split to Aust Yellow, but he shows no signs of being split. The only way you could be sure is to test breed with an Aust Yellow or a known split.

[Glenbary]

Hi FM101,
Yes they can be as the " European Yellow " is a sex linked gene whereas the Aust Yellow is a recessive gene. I have a sex linked yellow cock bird which is split to Aust Yellow, but he shows no signs of being split. The only way you could be sure is to test breed with an Aust Yellow or a known split.

I support Polar Gouldians comments. I keep both Aust Yellows (recessive) and the European Yellows (dominant) but I do not interbreed them. However I recently obtained from another breeder a single factor European Yellow cock which had a pale bib and pale yellow spot on the back of the head (features that some split AYs have). So I think this bird is European yellow, split for Aust Yellow. However as Polar says I would need to do a breeding trial to make sure it is a split AY.

[Matt]

I have several sex linked yellows split for australian yellow. I don't think many people deliberately mix the two together. I think it is more a lack of knowledge that this happens.It is interesting to see the effects when the mutations are combined though. An australian yellow male that is also single factor euro yellow will have a bright clean yellow back without the foul green feathering. So the australian yellow mutation has the same affect on green feathering as the white breasted mutation on euro yellows.