About 3 weeks ago my husband came home from work and found one of my 6 hens all crouched down and bleeding , he said the other hens were pecking at her. (These hens are all 5 months old). The injured hen had a wound on the top of her head about the size of a nickle. This wound was very deep, and I am sure I could see her brain. One of her eyes was closed also. I think she was attacked by a hawk, as we have many in this area and my chickens free range durning the day. I washed out the wound and put some EMT gel on it (It is an antibiotic, and a pain releving gel). I put her in a separate pen, and gave her food and water. I have been putting the medicine on her head two times a day. Now three weeks later she is doing much better. The wound is scabing over. Yesterday I let her out with the other chickens, and they all chased her!. So fearing they would hurt her, I caught her and penned her up by herself again. Did I let her out with the other chickens too soon??? Should I be doing something different?? Why did they chase her? When will it be safe to let her free range again?