We have free range chicken and ducks. They have a chicken cube that we lock during the night for their protection and we open during the day and let them wonder around the property. They are 8 months old. We never had any problems before. Last night in the head count we were missing one chicken that later we found with no head (on the pictures above) and today we found another one attacked in the same way but thus one wasn't dead. She's missing half of the back of her neck. We had to stich her us and we still don't know of she's going to make it. What animal can cause this type of damage? We have 22 acres in the city surrounded by neighborhood. And there are no coyotes or any other type of large predators we know of. Both attacks happened during the day.