I just found this thread.
I'm working on sexlinks too. I had RIR over Delawares, but had a hard time sexing some of the chicks so I moved over to blacks. I have a BO roo, RIR roo, and a RC RIR roo in the wings for Spring over BR hens. Because of the extreme cold here, I'm hoping to produce some rose comb chicks with the RC RIR. Does anyone have any insights on the comb genetics in this case? Can I expect some, or hopefully all, of them to be RC?
