We don't kill coyotes unless they are causing a problem. It is very ancedotale evidence, I know, but from 2000-2004 we had no livestock kills from coyotes. Not a one. A neighbor shot the whole pack up in October of 2004 (while tresspassing...Great..) By January a new pack had moved in, a pretty young one at that, and all of the sudden livestock started getting attacked...As of now that pack is gone too (A few well placed 223's from another neighbor) and the attacks stopped. When you have a pack in the area that isn't causing you trouble you leave them the heck alone. Rabiit, Quail, Pheasent and deer populations are all way the heck up so it wasn't like the yotes needed to eat sheep this year. And yes, I saw a yote take one of our lambs so I know it was them and not anything else and the footprints were everywhere In Jan and Feb.