The rooster shown below is from an accidental crossing of an OEGB rooster with a buff silkie hen. It can clearly be seen that he was WHITE skin and not the dark skin usually seen in silkie mixes. This is him: I mated him back to pure OEGB hens and got this hen, who is technically 3/4 OEGB and 1/4 silkie. Her black skin can clearly be seen. How can she have black skin if both of her parents have white skin? Is this possible? She also has a straight comb unlike her father. Could a pure silkie rooster have slipped in and mated with the OEGB hens, making this hen half silkie half OEGB?: I then mated the hen showed above back to a pure OEGB Rooster and got these chicks, all light skin and looking very much like OEGBs: So in conclusion, in order for the mixed rooster at the very top to have sired the hen shown in the middle picture, the dark skin had to have been hiding somewhere in the genetics. Is this possible? Or did I mess up along the way and let a pure silkie roo in the pen?