My 7 year old green hen has been growing true yellow feathers on her shoulders for about 6 months now. Her vet doesn't think anything is amiss since they are healthy and canary-yellow colored - not feathers turning yellow from damage.

Anyone else experiencing this? Just think it's interesting, and any further proof that my quaker is just plain weird would not be surprising

Mine has yellow featers on her tail. She is 5 years old. Maybe they get more yellow feathers as they mature????

Mine also has some yellow tail feathers.

There is a quaker mutation that is yellow. Someone on here has one, I think. Can't remember who. Maybe your quaker has one of those birds in her ancestry.

So I guess the question to those of scientific bent here.... how do breeders figure out they have a split bird? (Green to blue split, for example) Well, besides the obvious answer of being the ones to have bred a green to blue bird in the first place! *grins* Is there a visual marker at times or do you end up having to breed to find out?

To my knowledge, there are no visual markers on splits, since it is a recessive trait. You have to breed them and see what the babies look like. It's pretty common to have some bright yellow and lime tail feathers on quakers, but mine has them on her shoulders: think of what a baby sun looks like when it first starts to get its yellow shoulders.

My QP came from a whole mess of unbanded qps in a mall petstore - I knew better, but she stole my boyfriend's heart - so I don't know any of her provenance. She's particularly small and gracile for a QP. I know that in the wild, there are quite a few subspecies, so I was wondering if anyone knew anything about it along those lines.

Yup some on the tail.

QP's are called "Green", but in all actuality they are green with gray, and various colors of blue & yellow.

I don't think you're looking at anything abnornal+++ I think as they get older they will have lighter area's