Hmmm, definitely way beyond my level, not an expert, but wondering a couple of things... The birds in the pen where the eggs were laid included a silver pied peach male (so all offspring should have gotten a "peach" gene from dad, and all the hen chicks should have shown as "peach"), and various hens that were white, pied, silver pied and white eyed...
Do we know what the base color was of any of the hens? As in pied what? IB? Peach? Some other color? If there was a peach pied hen or a peach silver pied hen, there could be male peach chicks also, right? Or if the white hen was carrying a concealed peach gene? Or maybe there was a cameo hen?
Also, now I'm totally speculating, but it's another question I've been wondering about for awhile, so maybe someone can 'splain this to me...
Couple of things... First, peach, purple and cameo are all sex-linked genes, that's a for sure. Second, white and pied genes are alleles, but we don't know for sure if any other genes are alleles, right?
Next, I've seen it opined here on BYC (and maybe elsewhere?
Having a senior moment...) that peach results (or resulted from) a cross of purple and cameo. But I don't know if that has been verified, or is just a thought????
So to what extent, if any, are purple, peach and cameo alleles, or carried in related places on the sex chromosomes? What happens when peaches, purples and cameos are interbred? If peach really is a result of purple crossed with cameo, can it be uncrossed? Can a peach throw purple and cameo chicks, or only peach? Was peach a "one time" mutation, or is it something that requires having a purple gene plus a cameo gene? Are any of them recessive to another? Alleles? Can a male be peach split purple or purple split peach? Can a male have two purple genes and two peach genes? And two cameo genes?
Okay, maybe these are all just stupid questions and I just should do more reading
But you gotta love the mystery of it all