Brown-Wing was one of the "new peafowl" -- along with Indigo -- on Clifton Nicholson, Jr.'s website before it went down for updating. This is the breeder who created Peach, and also was one of the first to work with Purple and Bronze. He was working on some other combinations at that time, including Purple-Midnight, and something involving Charcoal. He and I emailed a bit back and forth a few years back -- see the
Combining Colors and
Inheritance of Peach threads I started here -- and he said what he'd do is look at two birds and imagine combining their traits. So, he'd cross birds of different colors, then breed the offspring together until something interesting came about, then selecting and reproducing that which he found interesting. That's how he got Peach by crossing Purple and Cameo, but he wasn't aware of the crossover mechanism that made it possible to have two different mutations on the same Z chromosome.
Brown-Wing might not be a single mutation, but one of the "interesting" results Clinton got from throwing different colors together. Or, instead, it could be something he selected over many generations, like one can do when creating a bantam version of a standard-sized chicken breed. So crossing Brown-Wing into other colors and patterns might not be as simple as you expect, since they may be either a strain, or the result of several color mutations together that cancel each other out everywhere except on the wings. I don't know.
Oh, and those other colors coming out are almost certainly the result of combining color mutations. Taupe, I've heard, is genetically Opal-Purple. And the other pale "new colors" might be Opal-Cameo or Opal-Peach. It's a shame they've been given names that create the illusion that they're novel singular mutations, rather than the result of putting two or more color mutations together. This will make for confusion when other breeders try and turn them into Silver-Pieds, or even just putting Black-Shoulder on them, since actual offspring results won't match what would be expected if breeders do their charts assuming things like "Ivory" or "Montana" are just single mutations.
I'm just happy that after I first posted about it on this forum some breeders gave it a try. Looking back on the thread now, it's "interesting" that some of the nay-sayers seem to be selling what they said then wasn't possible, but no matter. When you know something is true, that someone else agrees or not is inconsequential.
