Hello! I have three polish hens. One of them was attacked by a hawk and was separated from the other two for three weeks. Now that she is healthy again I put her in a fenced off area of the run to start integrating her back in. Well since I have done that, the other two hens are now fighting each other. Actually one of them is violently attacking the other while the other runs for her life. She hasn’t drawn blood but I feel so bad for her. Why is this happening and what should I do?!