Hoping someone can clear up a question about genetics for me. I had read somewhere on a post of someone selling poultry remark that the blacks they were offering for sale were extras or fillers in the box. They said they were unaware if they were blacks from a BBS breeding or if they were a result from a black on black breeding. Is there a difference? I was under the impression that the blacks from a BBS breeding were in fact pure black. Thanks for any help on clarifying this.