Pronghorns undertake one of the longest land migrations in the Western Hemisphere. Fences across their migration routes cause significant welfare harm through exhaustion, injury, and starvation when animals cannot pass.
Pronghorn fence welfare combines acute suffering (entanglement, exhaustion) with chronic population-level welfare impacts from disrupted migration. Animals trapped against impassable fences starve or die of exposure while visible food and water lie beyond. The welfare solution is technically straightforward - modified fence designs - but requires coordination with private landowners across vast landscapes. Public lands management agencies, conservation organizations, and landowner incentive programs have all demonstrated success in fence modification projects. This is a case where relatively modest infrastructure investments yield large welfare dividends.