One of my barred rock hens is being pecked in a cannabilistic way. I thought it was three young roosters, but even now that they're gone, she was hurt again when we pulled her from isolation and let her free range again. I found her hiding out in one of the coops. Poor baby. She was bleeding again. So, now she's back in isolation being treated with Neosporin and love until we figure this out. Our chickens free range all day and are locked away into two coops at nightime. We have one Rhode Island Red rooster, two hens, three Barred Rock hens, one Wyandotte hen, and two Bantums (one rooster and the other unknown). What can I do?