I am wanting to add a BCM roo to my girls and I have been talking with someone who has one they don't want because ithas a " 1 side sprig on his comb. It may be 2, it's hard to get a good look at him close up from both sides". What does a sprig mean and would you use him to start out with and try to improve from his off spring? I am not wanting him to show but will all his chicks have a sprig or 50/50 or maybe none?