I have one hen inside the coop separated by wire fence with 6 2 week old baby chicks. I have a white sultan that has always been the low hen in the pecking order until recently. Now the sultan is trying to dominate other hens. I noticed that the sultan has been challenging the mother hen through the fence. Both of them will jump up and put their feet on the fence at each other. Mind you these birds have been raised together and gotten along perfectly fine until now. Today I let the mother bird out in the coop and immediately she was met with the sultan and a huge fight began. I've integrated birds before but have never seen this level of aggression. The fighting is both birds tearing out feathers while jumping up with feet together. What do I do? Let them work it out? Is this just part of it?