I've had rooster pens, have a few now as I don't eat my chickens and love my Roos. When ever I'd get a young roo that was getting too big for his britches I'd throw him in the rooster pen for them to straighten the young one out. I have about 300 chickens and at least 1/4 are Roos..... Probably a lot more... Hehe. Yes many Roos will live together with out much fighting once everyone has their pecking order.