I opened the door to let the dogs out this morning, and got quite a shock. Only one of my 5 chickens was alive, and the whole yard was littered with feathers. Two chickens were laying dead in the yard with just their heads missing, and the other two were gone. Our chickens free range during the day, but are closed in their coop at night. My husband and I were trying to figure out what animal would kill them, but not take the bodies to eat. We know we have foxes that live by us, but there are so many that I'm sure they could handle 4 chickens. Also, can a fox jump a 6 food stone wall into our backyard? Thanks in advance for any suggestions!