Each spring thousands of elk (Cervus elaphus) migrate from areas surrounding Grand Teton and Yellowstone national parks to higher elevation ranges in the parks where other elk spend the entire year. As the most abundant ungulate in these two parks, elk have significant effects on park ecology. Their grazing and browsing may affect plant productivity and, as prey and carrion, they provide sustenance to carnivores (wolves, bears, and mountain lions) and at least 12 scavenger species, including bald eagles and coyotes.

Updated 8/12/11