I found the chicken in the fenced in yard but not locked in the enclosed cage, the door was open because It was day. The head was still on but the neck was plucked clean. Only one or two what looked like bites from the chest. It was raining so i don't know if there were any animal tracks. The other chickens are fine. I thought I could leave them out during the day for a bit. But I guess not. I'm so upset.