Migratory Corridor

Seasonal migrations of ungulates are increasingly threatened by various forms of anthropogenic disturbance, including roads, fences, and other infrastructure. Wyoming has some of the longest wildlife migration routes in the US, and protecting these routes is important for maintaining healthy populations. The Wyoming Game and Fish Department has worked to develop a strategy for conserving ungulate migration corridors and collaborated with the Wyoming Department of Transportation to install six underpasses and two overpasses along 20km of US Highway 191. WEST staff, including Dr. Hall Sawyer evaluated and documented the number of migratory mule deer and pronghorn that used the passes. Overpass and underpass construction reduced wildlife-vehicle collisions by approximately 81%. Several research articles and a book, Wild Migrations, have been published to date on this research. #WEST30Years