by Katie Bowell, Curator of Cultural Interpretation
Hopefully you’ve all been watching National Geographic’s Great Migrations and are fascinated by the idea that organisms can move, en masse, across huge distances and survive problems of predation, starvation, and weather.
However, as you find yourself engrossed in the migration stories from plankton to African elephants, don’t forget that there’s an amazing migration story happening practically in your backyard (if you live in northern Colorado or Wyoming, that is): Pronghorn Antelope (Antilocapra americana).
Animals belonging to the pronghorn family have been in North America for over 20 million years. Today only the species A. americana remains, and more of those pronghorn live in northern Colorado and Wyoming combined than any other place in North America.
Every fall, hundreds of pronghorn complete the second-longest migration in the Western Hemisphere: over 100 miles from Grand Teton National Park to their winter range Upper Green River Valley in Wyoming. Their summer range in the Grand Tetons is too cold during the winter, and without enough food, but Wyoming has everything they need.
Pronghorn have been making this migration for over 6,000 years. The migration corridor, 125 miles long and only 1 mile wide, is threatened by the presence of people, but pronghorn still make the trek every year, crawling under fences, crossing busy roads, and avoiding human development whenever possible.
In 2008, biologist and photographer Joe Riis was the first to document the entire pronghorn migration on foot. Watch the beautiful footage here.
One of the best places to see pronghorn in Fort Collins is at Soapstone Prairie Natural Area, just north of the city. The winter pronghorn population there ranges from 300-450 individuals. However, if you want to see pronghorn at Soapstone Prairie, you’d better hurry. The natural area closes December 1st and won’t open again until March 1st. Don’t worry, though. The pronghorn will still be there.