Map of Greater Yellowstone elk migrations created by the Wyoming Migration Initiative. Note how the Jackson Elk Herd shares summer range with other herds in Yellowstone National Park which, in turn, come in contact with other herds fanning out across the northern, western and eastern tiers of the Greater Yellowstone Ecosystem.  This is one way scientists say CWD might quickly spread
Map of Greater Yellowstone elk migrations created by the Wyoming Migration Initiative. Note how the Jackson Elk Herd shares summer range with other herds in Yellowstone National Park which, in turn, come in contact with other herds fanning out across the northern, western and eastern tiers of the Greater Yellowstone Ecosystem. This is one way scientists say CWD might quickly spread