I have one particular Buff Orpington that two different EE mix Roos are super aggressive to. We rehomed last year’s roo because he would just continually peck her head, but not mount her, even though she was trying to submit to it. He finally ended up ripping her skull open. She healed after we gave him away, but this year we have another mixed EE roo and he is doing the EXACT same thing to this poor hen. My question is, is the problem with my roosters or is something wrong with the hen?