http://tinyurl.com/39ag97w the recent reintroduction of wolves has cut sharply into the coyote popn - they do not directly compete for big-game,
as coyote cannot hunt elk or deer, let alone bison. they hunt rabbit, game-birds, steal fish from otters, scavenge bear + wolf kills,
eat any starved or winter-killed animals, take birds eggs, eat lizards and locusts...
but wolves will kill them if they can, and kill their pups, too.