I have 14 birds, 1 rooster. All have been raised from 1 day old exposed to kids, handled and ver sweet dosile. I integrated a flock of 7 hens, that were tight knit group with 1 loaner (These are all rhode islanders), with a tight flock of 4 (1rooster) this was 3 aracanas and one RI red. They seem to be getting along beautifully until one day the two aracona hens are trying to behead my loaner RI red. They are free range on large amt of land and I have kept them separate at night but for the second time now they have attacked her to the point of tearing her skin to look like ground meat. I can dr her okay as a vet tech of 11 yrs but I am concerned about the winter coming and not being able to keep them separate. I can home her to a friend but curious what the likelihood the hens will bully another when she is gone....or if there is something I can do to keep her. I really hate loosing a hen!! Help!