Just like title says. Woke up this morning to 3 ducks and 1 chicken with missing heads and a 4th duck with a wounded neck. They are in a 5ft tall chicken wire enclosure. There is no sign of how the beast got in or out of the pen. There is a tree inside the pen whose canopy touches trees outside the fence. Seems very strange for an animal to eat the heads and nothing else. All carcasses where left behind intact. What the heck would do this? any input would be great!