Sometimes called 'antelope', pronghorn are only distantly related to antelopes. Pronghorns are true North America natives that are found nowhere else in the world. They have roamed the plains and deserts of this continent for at least the last million years. They are the lone member of the family Antilocapra americana, which literally means "American goat-antelope."
With keen vision and great speed (pronghorn can reach speeds of over 60 miles an hour), pronghorn are ideally adapted to the wide open grasslands and sagebrush steppe ecosystems of North America. Both sexes have horns, but the female's are only tiny spikes and are rarely pronged as are the twelve to eighteen-inch horns of the male.
Since 2003, WCS conservation scientists have been involved in a long-term study of the Path of the Pronghorn, an age-old migration route that connects summer range in Grand Teton National Park with winter range far to the south in the western Wyoming's Green River Valley. The Path is:
- One of the longest overland mammal migrations in North America, and the longest left in the Greater Yellowstone Ecosystem.
- The only remaining pronghorn migration route to and from Grand Teton National Park.
- More than 100 miles long, but at its narrowest, less than 150 yards wide.
- More than 90% on federal lands.
Pronghorn Field Program
For almost 6,000 years, pronghorn have made yearly migrations between their summer range in Grand Teton National Park and their winter range in the Upper Green River Valley in western Wyoming. Their migration corridor, the Path of the Pronghorn, is one of the longest large mammal migration corridors remaining in North America, and the longest left in the GYE. WCS is leading the effort to secure recognition and permanent protection for this fragile migration route. Using field-based research, outreach and cooperative actions to inform and change land-use policies and practices, we are working to ensure that pronghorn will be able to make this spectacular migration for another 6,000 years. Read More >>
Pronghorn migration along the Path of the Pronghorn
WCS researchers are using global positioning system technology and geospatial analysis to monitor pronghorn during their semi-annual migration between Grand Teton National Park and the upper Green River valley in western Wyoming. Using this information WCS is working with a broad range of stakeholders to minimize threats to this migration and increase pronghorn survival. Read More >>