The naughty corner worked great for me when I joined my last group. My older RIR was horrible to the younger group, pecking, chasing, stalking...sneak attacks. She wanted them dead I'm sure. The others were okay as long as the little ones (15 week olds) didn't get too close. I took Rhoda (RIR) out for 2 days/1night of isolation and let the others work put their pecking order. When I brought Rhoda back she was the "new" hen and learned really quick not to mess with the young ones. It did take a couple months though before the two groups really meshed - shared the same roost, intermingled. Each group sort of had their own areas. Poor Rhoda...she still sleeps on a lower roost.