Hi, a couple nights ago I had a chicken injured greatly. It was about 4:00 or 5:00 a.m. when it happened. The skin on the chickens back was hanging and her comb looked to be gone. She had to be put down. There were no tracks when I looked (mostly because it rained a lot). What could this animal be. By the way, it would have had to be able to climb a little to get in. I'm locking up the chickens at night now (I don't know why I didn't do it earlier, this happens every year). Thanks!