I have 5 new girls (hopefully), that I incubated from my rooster and his ladies. When they are old enough to mingle with the flock, do I need to worry about daddy and his daughters, you know, doing it??? Do they end up having deformed chicks? I'm being serious and don't know how to ask this question. I've never been in this situation before, and I know it's not recommended for humans, but I have no idea if it applies to chickens/roosters.