You're definitely in a coyote rich environment, and will always have them replenishing. Sometimes after you've knocked down the originals, it may even take a few months. I've had good years since then, and some not so good, but they always show up again. I usually get a run in the spring it seems. Maybe it's the mating season and they're hunting for a mate, or perhaps just pups dispersing from their parents to find their own territory. In any event, they always come back that's the good part when you have habitat they prefer.