I have a rooster that doesn't like one of my hens. I have 5 hens total and he chases this one hen when she comes near him. She usually gets up on the coop and he doesn't get her. He has not pecked her or hurt her. When she sees him coming she gets away from him. He lets her roost and she eats when he is not around the food. What should I do? I go out and chase him away when I bring treats and make sure she gets treats until she is full then I let him eat. The other hens get along with the hen and they stay with her some of the time. I hate that she is alone some. Any suggestions?