I have a hen that is currently in solitary due to repeatedly attacking my pullets. They have been together for months now, and she continues to be extremely aggressive towards them at bedtime. She works herself up to the point of overheating, and is injuring the pullets as well. I thought I had things sorted with a re-arranging of the roosts, but last night she was actually making the pullets scream. I have never heard a chicken scream before. My emergency option last night was to put her in a cat carrier to get her away from everybody. I worry that she will overheat during the day in such a small space. Does she need to be completely out of sight out of mind for everybody to re-arrange the pecking order before I give her one last shot at being part of the flock? Or can I put her in the run (where everybody can see her) while everyone else goes out to free range?