This is Ethel, she is a bald headed bantam Cochin. She and her sister are lowest in pecking order. The others mostly leave them alone, except Ethel has a very bad habit. She waits until another hen goes into a nest to lay, then she runs into the nest and insists on staying in there with them . The other hen will try to get her out by pulling her by her head feathers. Ethel will hunker down and refuse to go. I've tried sitting in the coop and holding Ethel back from getting to the nest, and she fights me like a wild beast! What can I do? Is she just nuts? Is she territorial over the nests?