I know with other species of animals, female selection doesn't always go for a evolutionary success. There was a fly species that had eye stalks and the females selected males with longer stalks, but those were not genetically superior males. And last I read, female lions preferred males with...
I can somewhat agree based on my mixed flock. But I also have noticed that if they can't be bred by the single combed male, then their second choice is the araucana male (small, tight comb) and not my male that is a heterozygous pea comb. He is almost always the one they refuse to squat for and...
Pea combs have been around for decades at the very least, probably more like centuries. Plenty of time for things to be transfered all over the world, just like cats and rats have been.
Plus there are cases were seperate groups of an animal develop certain traits at seperate times. I forget...