Pronghorn Antelope: Migration and Coexistence on the Prairie

Pronghorn antelope undertake one of North America's longest remaining overland migrations. Fencing, roads, and development fragment their routes, creating welfare challenges and population bottlenecks.

Key Facts

Pronghorn in Wyoming migrate up to 300 km between summer and winter ranges, one of the longest terrestrial migrations in the Americas.
Pronghorn are the fastest land animal in the Western Hemisphere, capable of sustained speeds of 88 km/h.
Wire fencing is a major barrier to pronghorn migration — they rarely jump but readily crawl under fences.
Pronghorn populations declined from 35 million to under 20,000 by the early 20th century; they have partially recovered to approximately 700,000.
Wildlife-friendly fencing with raised bottom wires allows pronghorn passage while retaining livestock.

Welfare Considerations

Pronghorn blocked from seasonal migrations face nutritional stress, increased disease risk, and reproductive failure. Animals attempting to cross highways face mortality risk from vehicle strikes. Fencing that prevents crawling forces pronghorn to remain in depleted summer range through winter, causing starvation and increased predation vulnerability. Wildlife-friendly fence modifications — raising the bottom wire to 46cm — maintain livestock containment while restoring pronghorn movement at minimal cost. Migration corridor protection is one of the highest-impact welfare improvements available for this species.

What You Can Do

Support the Path of the Pronghorn conservation corridor in Wyoming.
Advocate for wildlife-friendly fencing standards in public land management.
Donate to Wildlife Conservation Society programs protecting pronghorn migration routes.
Reduce driving speed at dawn and dusk in pronghorn migration corridors.
Follow migration tracking data from Wyoming Migration Initiative.