I can not intigrate my flock because of my rooster I have 4 18 week olds in the big coop and four 12 week old that I can't because my rooster gets on there heads and tryes pecking there eyes out. He also won't let them free range if he spots them out he will run full on from a good distance to attack them. The hens peck at them at little but I expected that but not like this.