I have a 1 1/2 year old RIR hen and this is the 3rd time in the past 6mths, that she has been attacked so badly and this time was the worse with part of her comb mangled, back of head and neck feathers completely gone. By the time I noticed her running yesterday in the yard, the blood was just pouring down her face. I immediately separated her from the flock and you could tell even though she had been under attack, she was bothered by being away the others. I can not tell who is hurting her. I know it's not the pullets , but the 3 hens that are her age. Of all my chickens , she is the only RIR. The rest are Americauna's and Russian Orloffs. I'm not sure if it's because she has the red comb that they keep going after, but I worry for her life. Does ANYONE heve any idea why this keeps happening? It seems I get her all healed and put back to the flock that all is well for a couple months and then all heck breaks loose and she is their target. If I can't figure out how to keep harmony, I need to find her a home, even though she's my husbands favorite and lays the best eggs out of them all.