Yellowstone Wolf biologist Doug Smith captured a photo of a large grizzly bear standing guard over a bull bison he claimed after it was killed in a duel with another bull.
The photo doesn’t show the pack of wolves that Smith was monitoring from the small plane while flying over Hayden Valley. I flew over the park with wildlife aviator Dave Stradley years ago and soared over a grizzly in the same area. But he was on a dead run. National Park Service photo