Hmmm... I'm loving all of the input. My birds are hatchery birds. There's no telling about their exact genetics or possible mutations therein, so I used the basic calculator, which does not ask for any specifics. I assumed it would only tell me about the dominant coloration genes. For instance, some of my Buffs have pepper-like speckles on their tail feathers. 2 of my SLW's have primarily white breast feathers, and the black comes out as v or heart-shaped markings right there instead of a uniform lacing. I would consider a X bred roo if he comes from a good egg laying momma chicken.