Double factor yellow / Blue Body Male ?

[duchatinh]

Recently i have received this Male from one of my friends, and his blue ring color makes me feel really confused. Does he split to blue backed ? He is double factor yellow, normally the blue ring will consequently turn to white, however the blue ring on his neck is quite blue intended. And also his back color is a little bit dirty yellow, is it the result of blue backed gene? He has a silver sister , who has the same parents with him.

[wilkifam]

Can't help, but Beautiful Bird!

[birdclaws]

DF Yellow can still have some blue around the mask. It varies in its intensity and I think is less prominent in LB or WB. There is not any way of determining split to blue visually.

oh, and beautiful bird!

[ac12]

I have not raised enough YB to get a good feel for this, but, this is my observation with the few that I have.

The blue around the neck seems to be depend on the breast color.
I have a RH/OH-PB/WB-DF YB male that has a slight blue ring. His son is a RH-WB-YB, with a clean white ring. So I "think" the PB brings out the blue in the ring.

As for the back color, again, I "think" the PB makes the YB slightly "dirtier" looking than a WB bird.

I would guess that your bird is a DF YB.

Breed him and see what you get.
Unexpected colored chicks is some of the fun of breeding.
I've gotten OH chicks from RH parents, and for me that was a pleasant surprise.
I've also gotten a BH-WB-GB from a RH-WB-YB male and a RH-PB/WB-YH female. That really told me that the male was SF YB.

[waxbill lover]

This guy is definitely a double factor yellow. As some of the others have said, he could be split to blue somewhere, but a split to blue does not show up in the coloring of the carrier bird.

I miss my double factor yellow male. He looked exactly like your boy. He passed away a few months back, from unknown causes.

[duchatinh]

Thank you my friends !
However, i think If a normal green backed/Split to Blue can be recognized by observation due to the green color can assist the blue color to show on some parts of his wings and back With mine, may be the PB makes his back color seems a bit dirtier. But , reasonably, i still can hope that he has Blue gene, since his sister is a silver

[ac12]

Knowing family genetics (father and mother) is very helpful in figuring out what his hidden splits could be. I'm not good with genetics, so I can't figure it out from siblings.

[ranchnanny]

Oh ! what a beautiful Gouldian.....I lost my YB last month...
Don't understand much about mutations but I do love their coloring.... BEAUTIFUL!!!!