What gouldian mutation could this be?

[Misso]

Just wanted to get some thoughts on what mutation this Yellow Head Hen could be?

I have also posted a pic of a BH Normal to compare back colour and the 2 hens side by side.

mutationIMG_5176 (640x640).jpg

[Tiaris]

May not be necessarily a mutation (other than yellow-headed). You are comparing a yellow-headed to a particularly well coloured BH hen with strong back colour. YH hens are rarely as vivid green in the back compared to good BH hens. The paleness (IMO) is likely to be just the typical relative strength of colour of an average YH to an above average BH hen. The body colour of Gouldians is generally stronger in BH, slightly less so in RH & even less so in YH. So as in another post, mutations other than body colour (in this case head colour) do have a noticeable effect on other parts of the body. When these effects are subtle, it can be hard for some to detect them.

[KENTUCKY]

Many many years ago when I was taught about the Genetic Inheritance of Head colour in the Gouldian finch, I clearly remember Ray Murray saying that the gene for Head colour is an independent gene and can only modify itself, the different shade of green as shown in the picture is influenced by some other mechanism,not Head colour.

[finchbreeder]

Just went and had a squizz at mine. Slight colour differences in the backs of different head colours and sexs and birds. Nothing that I would say is specificaly head colour linked looking at them but. So probably just like different shades of brunette or blonde in people.
LML

[Tiaris]

Many many years ago when I was taught about the Genetic Inheritance of Head colour in the Gouldian finch, I clearly remember Ray Murray saying that the gene for Head colour is an independent gene and can only modify itself, the different shade of green as shown in the picture is influenced by some other mechanism,not Head colour.

I strongly disagree. Even my yellow-billed BH Gouldians have distinctly weaker body colour compared to my red-billed BH birds. Even though it is a subtle difference, this is very consistent throughout my BHs which are half yellow-billed and half red-billed. My YH birds compared to BH are chalk & cheese in body colour.

[Tiaris]

rsz_rsz_pb290072_1.jpg

[Tiaris]

The above birds are not my best or worst of either head colour. The difference between them typifies the difference between my BH & YH stock in body colour. Not just green, but also blue, yellow & purple areas.

[Craig52]

I agree Tiaris,it is very much the same with all yellow/orange mutations,painteds,stars and redbrows to name a few.The fawn mutation of the painted proves this with the yellow mutation fawn being a very light sandy coloured bird compared to red fawn painted which is more of maroon colour,not that yellow headed gouldian is a mutation as such but the head colour does affect body colour. Craig