The Essential Pronghorn Corridor in the Greater Hart-Sheldon

Devlin Holloway

The Greater Hart-Sheldon region straddles the Oregon-Nevada border and provides essential habitat for pronghorn, as well as hundreds of other sagebrush-dependent plants and animals. In 2016, the region supported more than 8,000 pronghorn. However, populations have declined since then, with the most recent count at 4,313 animals in 2019.

As Sheldon-Hart Mountain National Wildlife Refuge Complex refuge manager Shannon Ludwig explained, in the article Removing the tangled legacy of barbed wire, “Fences clearly can disrupt migration corridors for wildlife, especially larger ungulate wildlife, with how the fences are designed. Deer like to jump over fences, and pronghorn and bighorn sheep like to go under the fences.”

As information newly published by the U.S. Geological Survey highlights, this landscape is critically important to the future of North America’s “prairie ghost.” ONDA used this GIS data to create the map below, which highlights how much of the migration corridor lacks a strong protective status and how many miles of fencing still cross this corridor.

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Greater Sage Grouse and Sparrows at Hart Mountain

Greater Sage Grouse and Sparrows at Hart Mountain

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Helen Harbin on Wildlife

Helen Harbin on Wildlife

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The Land Between: The Greater Hart-Sheldon Region

The Land Between: The Greater Hart-Sheldon Region