I separated 2 chickens, Merri and Daffodil, from the rest of my flock because they were having troubles growing back their feathers because the other chickens were picking the pin feathers. Today, I let them out in the barn because they were getting cabin fever from not getting out to range in 2 weeks. Now, the coop is within the barn, as well as my segregation pen. Merri marched her way over the coop, where her used-to-be brooder mate, Pippyn, was. They started ATTACKING each other. I mean, hackles up, head down, jumping feet first at the other, growling. Thankfully there was wire between them so nobody got hurt. I knew they didn't get a long the best and would sometimes fight over nesting boxes, but I didn't know they hated each other. I am NOT looking forward to when I have to put Merri and Daffodil back with the rest...Or should I not? I do not want to be around when Merri and Pippyn can actually get to each other. Should I see how it goes when I put them together? Or should I either permanently have them separate or sell one?