thats very wierd to have all them in should a close spot. I can't see a pack of coyotes taking down THREE deer all so close together. There would have to be 20 coyotes to take them down that fast that close together. By the look of the marks on the head, I'm almost convinced its poachers, Look at the angle the cut in the head is, V shape, typical cut from removing the rack. Don't wanna get close to the rack, leave lots of bone to keep the rack together. Likely cut a few steaks off and the rack and left em to rot. You ever see a tresspasser, give em hell and prosecute them to the full extend of the law, maybe they will learn a lesson.