They run in cycles. As recently as 3 years ago, the cottontails were horrendously thick, the coyote, fox and bobcat population was exploding as well. The rabbit numbers started to drop , the coyotes turned to adding fox to the diet, then they got the mange, and about died out. Bobcats still doing fine, not many cottontails around , but the Jackrabbits, both whitetails and blacks are starting to rebound.