I just had one chick hatch out. It's from a brown egg. That means it's either from my barred rock or my sex links or dark cornish. But the fathers could only have been a White BO mix, a Sex link (which is no longer with us and he was white) or our white crested black polish....whom I've never seen successfully mount anyone but the other polish girls. This chick is as black as night! I was expecting a white, yellow, or chipmunk looking chick from this brown egg. I'm so stumped! I hope the others hatch...they haven't done anything yet. sheesh!