I discovered a patch without feathers on the back of one my Cream Legbar pullets yesterday, and I initially thought she was molting. Today, however, I saw one of my Black Copper Marans pulling her feathers out.
I also noticed she did the same thing to the other two pullets, but to a lesser extent. I've isolated the bully in a small dog crate with the bottom removed, and placed it inside the run with them. All four pullets will be in quarantine for another two weeks, but I'm not sure if I should keep the two Legbars separate for longer. I don't want my big girls pecking at her exposed back. What do you think?