I have a chicken who was a bully to my two young girls. She would constantly peck and pull feathers- even if she was laying down if they went anywhere near the food she would charge And peck them and pull there feathers. We put pinless peepers on her. But now her sister ( who is broody) is bullying her. They used to be inseparable but now the second she sees her she jumps on her back and starts going at her. This happened the second the peepers went on. Now peepers chicken isolates herself and seems to have trouble eating. Is this normal?