Originally Posted by Olive Hill
No, I'm saying their genetic heritage differs. I'm saying if I had to guess at what existing birds Dave used to create these I'd say Toulouse probably played a big part in it. The rest of what you have described is precisely what Dave does. You might want to browse his website, he's well known for creating designer breeds. He calls the Blues and Lavs Americans because he created them to mirror the buffs in body type and conformation, but in alternate colors. And he did a good job, but that doesn't mean they're genetically Americans. Which, because the true Americans are a rare breed, is an important distinction to make.
The way poultry standards are written, genetic heritage is not a requirement for a bird to be accepted as a breed -- or, at least, that's what's continually echoed here. There are poultry breeds which have varieties listed under them, even though the varieties themselves had different genetic origins (Rhode Island Red vs Rhode Island White, for example). They are considered the same breed because they can breed true to the same conformation, despite the fact that each arose independently from one another. There is a breed of turkey today that was formerly extinct, but was revived by combining other breeds which had the necessary color genes to recombine to form the color conformation in the extinct breed's SOP -- ironically, also a Buff (Jersey Buffs). They can be shown as the same breed, even though it is clear that today's birds are not descended from the birds in the original population. If they fit the physical description and can breed true, they're in.
Yes, I've followed as much as I can find of what Dave has been doing with breeding -- I have some of his publications as well. I remember seeing a "Blue Toulouse" somewhere, so perhaps this was a starting point for the Blue American -- and possibly why you say you see Toulouse traits in them today. If they are continually bred to the American's breed standards, and breeders petition to allow them as a variety, then they may become accepted. But even if they're not, there's still a population of "Blue Americans" which have a following. If people added the Buff gene to the "Blue Americans", it wouldn't make them any more or less an accepted breed, but would increase the color spectrum. Like you said, they're a "designer breed" which can't be shown -- they're just for fun, or for production.