I'm not familiar with chicken showing, but I'm familiar with showing dogs and rabbits. And I am also pretty familiar with the genetics of both that produce certain colors. So the entire genetic make-up of chickens and their colors is new to me. However, I received the hatching egg of a bantam Columbian Wyandotte earlier this year. It turned out to be a roo, and today he crowed for the first time. He's got the comb of a Columbian Wyandotte. He's got the proper leg color (yellow, bare), and the neck and tail colors look correct. But his back isn't. It has a lot of BROWN in it. As a chick he was pure WHITE and grey - not yellow like most chicks that develop white feathering. So I know he's definitely at least PART CW. My question is, when it comes to showing chickens, how serious is this "fault" and how easy might it be to breed it back OUT of him? I would imagine that I need to breed him to a clean hen, but if those chicks develop no brown coloration, are they "clean"? Or could they still carry brown onto their own offspring? Here is the pic of his coloring, for reference. Columbian Wyandottes are in fairly good demand in this area, especially the bantams. I'm just wondering if I need to give up on him and get a better roo right now, or if he has the capability of producing cleaner CWs that I could use in the future.