I am on a roll with trying to understand the different colour chickens I have with an eye to which ones I want to keep for breeding. (assuming type is good of course) THis genetics stuff is fascinating! I have a partridge bantam cochin rooster and hen. I also have some black hens, white, mottled. I was wondering what happens with the colour if you use the partridge roo over these hens? And if I use a black roo over the partridge hen? HOw do the genetics work with the partridge colouring?