Looking for Gene info for the Alula / Bastard Wing / Carpal Spur.

[TokoBird]

I had wing claws pop up on some of my mutts. Oegb/serama X silkie. I’m going to assume they came from my hatchery quality silkies. I sold off those silkies before making this discovery. Would this be a sought after trait for fellow chicken enthusiasts? I honestly thought the wing claw was a broken feather at first, nope, just an oddly placed toenail.

Wing claws are a regular trait that many chickens have. Most breeders don't care about them, because their size/length is not a part of any breed standard.
I'm doing an odd breeding project due to personal interest, unrelated to any sort of industry trend. So, it's not likely to be a 'desired trait' to any chicken enthusiast aside from me, haha~