The elk were 150 to 200 yards away, evidently unaware of our presence from above as they slowly walked.” Yellowstone provides summer and fall range for up to 20,000 elk belonging to 6-7 herds.

On their first migration to their summer range in southeastern Yellowstone, three-week-old calves of the Cody elk herd follow their mothers up a 4,600-foot slope. A few hours earlier they swam the ...

Wild animals do not recognize park borders. Two of Yellowstone’s iconic species, bison and elk, spill seasonally—and naturally—beyond park boundaries looking for food. One is welcome.

But the huge fire of 1988 ultimately produced few large trees. The elimination of Yellowstone's wolves allowed the elk to browse aspens unchecked. Finally, Ripple and Larson decided to look within ...

the National Elk Refuge can be viewed from observation points year-round. It is open from sunrise to sunset daily. People are always forbidden to step onto the refuge without special permits for ...