I have a RIR hen that has been pecked in the back of the neck by the other hens. I don't think they are being specifically mean to her. It seems when she is in front of one of them and bends over, they see the white and naturally peck. She has a big bare spot all along the back of her neck. I have no roosters. She is not sick and is eating and drinking normally. Is there anything I can put on the back of her neck to make them leave her alone? Do I need to seperate her from the others? What should I do?