I have four chickens and the one thats obviously at the bottom of the pecking order has been getting picked on a lot more recently. I just looked out the window and one chicken had its leg on her head and wouldn't stop pecking her. When I picked her up yesterday she had a weird smell to her that turned my stomach. If she was dying, or diseased would the other chickens sense it and peck her more like they're doing? Or maybe under her fluffy cochin feathers she has a wound that's festering??