I live the great state of Missouri and we have penty of coyotes but I have to say I have never seen or came across a kill sight of a deer from a yote. I know they kill fawns here but a muture deer ??? I use to trap alot but now its just for fun, from that I learned that they love baby cats , bluejays, rabbit, quail and any other bird or small animals in the woods. Sure they eat the deer found dead ,I would have to see it to believe they could bring down a muture buck or doe. I have yet to see more then two or three to a pack . We use to kill 20 or so a year now its just 10 to 15.I do shoot all of them I get a chance to.