I have spent several days of slowly introducing my 10 week old chicks to my older hens. Today was the first day they were all together. Found one chick with her head stuck in fence wedged behind the small pen they had been in. I don't know if the injury to her neck is from being stuck in the fence and trying to get out or if while she was stuck an older hen pecked her. anyway, her neck is completley raw and very bloody. I have brought her into the house and put her back in a tub that I kept them in when first hatched. She is eating and drinking. I am sort of freaking out about her neck, the whole thing is just raw meat, yuck! She is moving around just fine. I will of course keep her isolated, but what else should I do? should I try to bandage her neck? put medicine on it? How long should I expect the older hens to pick on the younger ones? I have 5 hens 1 year old and 1 rooster, I have added 10 young chicks.