You might have to reintroduce her to the flock by putting her in a dog cage so they can see her but not attack her. Once a chicken gets pecked to the point of bleeding, the rest will or can peck/eat her alive till she dies. I have had to remove all the hens, put the reintroduced chicken with the rooster, then in a couple days add another hen, and another in a couple more days. Has worked most of the time. BUT I would give her away before I allowed the others to tear her up.I just reintroduced my Easter Egger to the flock, and I realize that could be what is going on, but they have always picked on her. She is not severely injured, just starting to lose some feathers and have some scabs. I want to intervene early before the problem gets too serious.