My rooster has 28 hens and all of the hens are laying. I have one buff orpington that he will mate and then attack. A while back I had to put her in the isolation pen because he almost pulled her comb completely off. I treated her and it healed up nicely and now each time I try to integrate them, he attacks her and I have to put her by herself. She submits when he gets near her and he mates her but right after he beats her up. I have no idea what could be wrong with him or her or both. Any ideas? She is laying, and has been for quite some time. She was bleeding very bad from the puncture yesterday. I really think I'll have to keep them separated from now on. This just doesn't make sense to me.