Are you sure they are 100% coyote? They maybe coyote dog mix. When I lived in Illinois (in the middle of nowhere) we had a huge problem with coyote dog mixes. Our area was a favorite dumping ground for unwanted dogs by the folks in "the city". They were absolutely more bold then a pure coyote. I actually was treed by coyote kerrs for over 2 hours once. A couple days later they killed over 75 sheep and attacked three horses that had to be destroyed because their wounds were so bad. We finally had an old fashion (me and several neighbors along with conservation agent) pose hunt. The kerrs were still a problem the day I moved.