Pronghorn antelope undertake one of North America longest land migrations, but fencing across their routes creates welfare-compromising barriers that population management and infrastructure can address.
Pronghorn migration welfare depends on corridor connectivity that allows completion of ancient seasonal movements between habitats of adequate quality. Fencing that blocks passage at critical bottleneck points traps animals that cannot jump to safety and face starvation in depleted winter habitat. The welfare and conservation solution is identical: wildlife-friendly fencing modifications that allow pronghorn underpassing while maintaining livestock management function. The relatively low cost of raising bottom fence wires by just a few inches makes this one of the highest cost-benefit welfare and conservation interventions available for North American grassland ungulates.