Jackson National Fish Hatchery Children especially enjoy the aquariums with beautiful specimens of trout and the tanks that teem with fingerlings. These trout will be planted in the lakes, streams and rivers of Wyoming. The National Elk Refuge, adjacent to the southern border of Grand Teton National Park, provides a winter home to nearly 7,500 elk every year. Late in October and early in November when snow comes to the high country, elk begin their traditional migration from their summer range in the Tetons and Yellowstone to lower winter range in the valley. Heavy snows force the animals to lower elevations in search of food.
Elk stay on the Refuge for about six months each winter.
During the hardest part of the winter, if natural forage is not available, the elk are fed supplementary. The nearly 25,000 acre National Elk Refuge is administered by the U.S. Fish and Wildlife Service. John D. Rockefeller Jr. Parkway Linking West Thumb in Yellowstone with the South Entrance of Grand Teton National Park, this scenic 82-mile corridor commemorates Rockefeller's role in aiding establishment of many parks, including Grand Teton. Yellowstone National Park Yellowstone is the first and oldest national park in the world.