Wild Pronghorn Welfare and Conservation

Pronghorn antelope — North America's fastest land mammal — face unique welfare challenges from fencing fragmentation of their migration routes across the American West.

Key Facts

Pronghorn can sustain speeds of 88 km/h over long distances — adapted to outrun now-extinct American cheetahs
Unlike deer, pronghorn are not adapted to jump fences — they move under or through them, and standard fencing blocks migration
The Upper Green River pronghorn migration in Wyoming — 240 km round trip — is one of the longest land mammal migrations in North America
An estimated 1.2 million km of livestock fencing fragments pronghorn habitat across the American West
Migration bottlenecks created by fencing cause mortality from starvation when traditional routes are blocked
Pronghorn populations dropped from 35 million pre-European settlement to under 500,000 by 1920
Fence modification programs raising the lowest wire and smoothing barbed wire allow pronghorn passage without blocking cattle

Welfare Considerations

Pronghorn welfare is fundamentally a landscape connectivity problem. Their extraordinary speed represents an evolutionary adaptation to a predator environment that no longer exists — modern threats including fencing, roads, and energy development create entirely different obstacles their anatomy did not evolve to manage. Standard livestock fencing with barbed wire strands close to the ground prevents the pronghorn movement pattern of ducking underneath, causing injuries when animals attempt passage or mortality from blocked migration. Individual pronghorn caught in migration bottlenecks experience starvation and weather exposure when unable to reach winter or summer ranges. Fence modification programs — raising the lowest wire to 46 cm and replacing barbed wire with smooth wire at the bottom — allow pronghorn passage while maintaining cattle containment, resolving the welfare conflict without significant economic cost to ranchers.

What You Can Do

Support Pronghorn Path programs funding fence modification across critical migration corridors
Advocate for wildlife passage requirements in energy development permits crossing pronghorn migration routes
Donate to organizations mapping and addressing pronghorn migration bottlenecks with landowner partnerships
Support wildlife-friendly fencing replacement programs in pronghorn range states
Engage with state wildlife agencies advocating for migration corridor protection in land use planning
Educate ranchers about fence modification — raising the bottom wire — that allows pronghorn passage without affecting cattle containment
Support protected area connectivity ensuring pronghorn access to seasonal ranges without fencing barriers