I have 6 hens, 3 Rhode Island Reds, and 3 Australorps. One of the Australorps keeps escaping from the chicken pen, and is hiding in the barn. She has been laying eggs in the barn, and for the past 8 days, has not laid any eggs, or left the barn. There were 2 eggs she was laying on, but I removed those eggs a few days ago. When I try to get her out of my barn, she growls and tries to bite me. Do I need to kill this chicken, or is this some kind of phase that chickens go through? Thanks for any help.