From UPI.com:

DENVER, May 8 (UPI) — As the population of gray wolves expands across the northern United States, researchers are finding a surprising side-effect: Their presence appears to lead to a reduction in the coyote population.

Wildlife researchers at the University of Washington are using radio transmitter collars and game cameras to determine how the new presence of top-of-the-food-chain predators is influencing scavengers, or “kleptoparasites,” particularly coyotes.

Click here for the full story.