© Donald M. Jones/Minden Picture
In the path of the pronghorn
As the days lengthen and spring flowers bloom, herds of pronghorns in Wyoming migrate north from their winter grounds in Upper Green River Basin to the Grand Tetons National Park. The journey, which biologists have dubbed the 'Path of the Pronghorn,' covers about 240 kilometres across government and private lands. Pronghorns have walked this route since prehistoric times, though today, fences, highways, and other unnatural barriers have made the journey more perilous. To help, wildlife corridors are being constructed over highways and under bridges to offer safer passage for these quintessential symbols of the American West. Conservation efforts like these have helped to make the 'Path of the Pronghorn' one of the longest migration corridors remaining for large mammals in North America.