I just added a' big" full grown rooster to my flock...hens only flock for a year and a half. I kept them seperated for several days but when I let him out in the run he went right for my leghorns......pecking and just beating them. I have 3 rhode island reds(full grown) and he gets along with them with no problem.I seperated him again and tried again a couple days later...same action. He even hunts them down (they are trying to hide).......he is a beautiful rooster...americano.He is only mean the white hens????? Any ideas to make him stop this behavier would be appreciated. He will have to go if this keeps up!