I have a hen who seems to have been ostracized by my flock. I have 8 hens and one rooster. This started a couple of months ago. Prior to that they all got along fine. We noticed one morning that she had a small bleeding wound on her head, like he’d been too rough with her. But the next morning it was a full-on bleeding wound like all of them had been pecking on her. So I isolated and treated her. Kept her in isolation for a few weeks in order to heal completely. Reintroduced her into the flock and the rooster and head hens immediately started chasing and attacking her. We isolated her again just to give her some peace, and just reintroduced her again. Same result. She is harassed constantly and hides all day. She has lost weight from being harassed and not allowed to eat, but otherwise seems healthy. Any ideas before I try to rehome her?