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Mule deer within the Red Desert population, part of the larger Sublette herd, make the longest ungulate migration ever recorded in the lower 48 states (fig. 33). Here, mule deer travel an average one-way distance of 150 mi (241 km) from the Red Desert in the south to the Gros Ventre Range and Teton Range in the north. This migration originates in the desert sagebrush basins of the Red Desert area of southwest Wyoming where deer winter. In spring, an estimated 500 deer travel 50 mi (84 km) north across the desert to the west side of the Wind River Range. From there they merge with 4,000 to 5,000 other deer that winter in the foothills of the Wind River Range and then travel a narrow corridor along the base of the...
The Platte Valley Herd Corridor was designated by the Wyoming Game and Fish Department in 2018 (fig. 30). The Platte Valley herd contains approximately 11,000 mule deer. The corridor is based on two wintering populations, including a south segment from Saratoga, Wyoming, to the Colorado State line, and a north segment from Saratoga to the Dana Ridge area north of I-80. Winter ranges in the Platte Valley are more dispersed than winter ranges in other parts of the state, so deer migrate in many different directions. Many deer in the southern segment follow the Platte River south to summer ranges in Colorado. Most deer migrations in the north radiate south and east from winter ranges along I-80. The WGFD collared 45...
Pronghorn (Antilocapra americana) within the Sublette herd comprise one of the largest pronghorn populations in North America. Sublette pronghorn winter in the more southern areas of the upper Green River Basin. Depending upon winter severity, individual pronghorn winter between Pinedale in the north to Rock Springs in the south, and in the western portions of the Red Desert. Winter ranges include a mix of grassland and sagebrush dominated mesas and rolling hills. During migration, animals that have been tracked with GPS collars (n = 362 females) travel an average one-way distance of nearly 60 miles (96 km), with some animals migrating over 200 miles (320 km). This herd is home to the longest distance migrating...
This is the data archive for the publication Ungulate Migrations of the Western United States, Volume 2 (Kauffman et al. 2022) and includes the collection of GIS map files that are mapped and described in the report. These map files are meant to provide a common spatial representation of the mapped migrations. This data release provides the means for ungulate migrations to be mapped and planned for across a wide variety of landscapes where they occur. Due to data sharing constraints of participating agencies, not all the files that underlie the mapped migrations included in the report have been released. Data can be viewed at: https://westernmigrations.net. Data in this archive can be downloaded two ways. To download...
The Ryegrass mule deer population is part of the larger Sublette herd that winters in the northwest portion of the Green River Basin, west of the Green River and north of Cottonwood Creek (fig. 34). In severe winters, these deer may travel southeast to The Mesa, Ross Ridge, or Reardon Draw areas. The Ryegrass region supports approximately 1,500 to 2,000 deer that migrate northwest to summer ranges in the Wyoming Range and Salt River Range. Many of these deer must traverse U.S. Highway 189, where deer-vehicle collisions are problematic. This stretch of highway is a top priority for underpass installation to improve both wildlife permeability and motorist safety. These data provide the location of migration routes...
The Sublette herd is the largest moose population in Wyoming, numbering approximately 1,800 individuals. This herd winters among the willow-dominated floodplains of the Green River Basin, primarily the eastern foothills of the Wyoming Range; some animals winter also in the Hoback Basin. As a partially migratory population, approximately half of the moose are resident, while migratory individuals travel short distances (14 miles on average, max 45 miles) primarily to tributaries of the Green and Hoback rivers. During spring, most migration routes originate on private ranchlands within the expansive willow bottoms of Beaver, Horse, Cottonwood, and Piney Creeks, as well as the aspen-conifer forests of the Hoback Basin....
The Mesa mule deer population is part of the larger Sublette herd that winters in the north-central portion of the Green River Basin, east of the Green River and west of U.S. Highway 191 (fig. 32). The Mesa wintering area supports 3,000 to 5,000 deer that migrate northwest to summer ranges in the Wyoming Range, Gros Ventre Range, and Salt River Range. The Mesa winter range, which has been fragmented by a large natural gas field, has experienced 30–40 percent declines in deer abundance since this development began. Mitigating winter range impacts continues to be a challenge for managers. These migratory deer have benefited from six underpasses and two overpasses constructed along U.S. Highway 191 in 2012; the project...
Migratory movements of elk within the South Wind River herd include short (i.e., 10 miles) to medium (i.e., 40 miles) distance migrations generally from low elevation winter ranges along the foothills to high elevation summer ranges within the Wind River Range. Elk movements along the west side of the Winds trend southwesterly from summer ranges to winter ranges, largely dependent upon winter severity. Some individuals traverse the Winds and winter in Red Canyon. There are a number of challenges for South Wind River elk. These include increasing vehicle collisions on US Highways 287 and 789 from Twin Creek to Beaver Rim and over South Pass and potential future energy development along the western side of the Wind...
The Sublette Herd Corridor was designated by the Wyoming Game and Fish Department in 2016. The Sublette Herd supports an estimated 20,000 to 25,000 animals, and the corridors represent movements from three subpopulations, including the Ryegrass, Mesa, and Red Desert segments. Deer from the Ryegrass winter west of the Green River and migrate northwest into portions of the Wyoming Range, Salt River Range, and Hoback Basin. Deer from the Mesa segment winter east of the Green River and migrate northwest to summer ranges in the Wyoming Range, Snake River Range, Hoback Basin, and Gros Ventre Range. Deer in the Red Desert occupy winter ranges near Superior, Wyo. just north of I-80. These animals migrate nearly 150 mi (241...
Migratory movements of elk within the Piney herd unit, a large area encompassing the eastern side of the Wyoming, include short (i.e., 10 miles) to medium (i.e., 30 miles) distance migrations. These elk migrate from low elevation elk feedgrounds and native winter ranges in the Upper Green River Basin to high elevation summer ranges in the Wyoming Range. In summer, some elk head further west into the Grey’s River Basin from the Bench Corral and Forest Park feedgrounds. Challenges for Piney elk include energy development, especially in the southern portion of the herd unit. These data provide the location of migration routes for Elk (Cervus canadensis) in the Piney herd in Wyoming. They were developed from Brownian...
    map background search result map search result map Migration Routes of Elk in the Piney Herd in Wyoming Migration Routes of Elk in the South Wind River Herd in Wyoming Migration Routes of Moose in the Pinedale Herd in Wyoming Migration Routes of Mule Deer in the Mesa Population in Wyoming Migration Routes of Mule Deer in the Red Desert Population in Wyoming Migration Routes of Mule Deer in the Ryegrass Population in Wyoming Migration Stopovers (WGFD) of Mule Deer in the Sublette Herd in Wyoming Migration Corridors (WGFD Designated) of Mule Deer in the Sublette Herd in Wyoming Migration Routes of Pronghorn in Sublette Herd in Wyoming Migration Routes of Moose in the Pinedale Herd in Wyoming Migration Routes of Elk in the South Wind River Herd in Wyoming Migration Routes of Elk in the Piney Herd in Wyoming Migration Routes of Mule Deer in the Ryegrass Population in Wyoming Migration Routes of Mule Deer in the Mesa Population in Wyoming Migration Stopovers (WGFD) of Mule Deer in the Sublette Herd in Wyoming Migration Corridors (WGFD Designated) of Mule Deer in the Sublette Herd in Wyoming Migration Routes of Pronghorn in Sublette Herd in Wyoming Migration Routes of Mule Deer in the Red Desert Population in Wyoming