So my young son reported with great despair that "one of the chickens is on top of another one biting its back". He's 10 and it's about time to have the "talk". Luckily, I have chickens and bees to use as a teaching aid. So... I believe that I know the answers to my questions but hope to get reassurance from those that have been doing this longer than me. Are 2 roos too many for a flock of 35 hens? I have a mixed flock and am not concerned with keeping them pure breed. I've chosen my flock based on egg laying habits, not aesthetics. Will I be ruining any traits by cross breeding? This wasn't part of the plan but now that I have males, I'd like to see how natural incubation works out for us.