> The 'American Yellow' logically seems to be a Suffused, which is a
> form of true Dilute, however if I remember the Mutavi research
> correctly, they were not able to identify the specific markers of that
> mutation in it. So its true identity remains questionable.
>
> Terry

This is true.
A bunch of my Yellows were involved in Inte's feather testing back then.
He called to my attention the dark hash markings on the wing feathers.
I truly 'think' that in the beginning there was a rush in USA to sell the
then Am.Yellow .
When bred to Yellow, AKA European Pastel, it does produce Green birds.
At least in my Aviary it did.
In the beginning that caused much confusion amongst some 'breeders' here.
Especially those who were sold splits that never produced Yellow birds
because they did not know
what they had or how to breed it.

Terry are you working on a new book or a supplement, as so much has come
about in the last decade ?

June
www.hideawayfarms.com/aviary
Not recently updated but still there.