My chicken named Feathers used to be so aggressive to humans and pecked at our legs, but her behavior has been changing. Her pecks got lighter and sometimes she never even pecked at us. The problem is, my other hens have been bullying her and pecking at her often. Not really hard though, they just pecked. As I looked out my window, Feathers was just sitting there, and my chicken pecked her. So I came outside. Her tail was puffed up like in this picture, (it is Feathers.) what does this mean? She's been standing there for a long time and didn't move, she was just blinking. Every few minutes she moving around and pecked, then she stood again. I came outside and started guarding her, and barking at the other hens like a dog, (because they are scared of dogs) whenever they approached her. Why is Feathers standing there? Please reply.