Wolves and coyotes in Yellowstone

CNN has this interesting article, Wily coyote outgunned by bigger canine cousin, about how coyote populations in Yellowstone National Park have been affected since the reintroduction of gray wolves in 1995. Coyote populations have been decreasing due to competition from the wolves, but naturalists are not concerned, seeing it as restoring the natural balance between these two predators, noting that the coyote population probably increased when wolves were eliminated from the park in the 1930s.