So i have two coops. Coop one is 4×4 with an 8×4 attached run. This is home to 5 hens. I have one hen who has all her back feathers missing above the tail..totally bald. Like a patch the size of my hand. I suspect a large red hen who is in perfect condition. The other three look a little pecked but still in good shape overall. Im wondering if i should move the beat up hen in with my other 3 POL hens that live in coop 2. Coop 2 is 3.5×4 with a 3.5×6 run. I often let them roam the yard during the day as both coops have their own larger fenced area. Just not sure how to solve the issue. Also not completely sure which hen is doing the damage. Any advice ?