We have two Black Copper Marans hens and a BCM roo, and are thinking of hatching a few next time one of the girls goes broody. I'm also wondering whether we could guarantee some females with sex-linked mixes. Our other hens include EE, RIR, BR, Welsummer, Welsummer/EE cross, GLW, Light Brahma, BO, Black Australorp, and B/W and Golden Polish. Would the BCM roo make sex-linked chicks with any of those other hens? I found some good posts with very detailed genetic info on sex-linking, but didn't see this particular example. Thanks very much!