Pronghorn are widely distributed across southeastern oregon and are highly valued for both hunting andrecreational viewing opportunities

Pronghorn habitat has been impacted by many factors including changing land use practices, mineral extraction, energy development, effects of invasive animals and plants, large-scalewildfires, as well as fences and other barriers to movement. Many big game species including pronghorn can movelong distances ( 100 miles) between seasonal ranges to take advantage of seasonally available high-quality foodsor to escape harsh winter conditions. Increasing development for highways, urban expansion, and mineralextraction activities has potential to severely disrupt migration corridors for these animals. Therefore, delineating seasonal ranges and migratory pathways is important for pronghorn management and to help offsetnegative effects of other activities on public lands. Nutritional value of many of the native plants has beenlost with changes in ecosystems. Increasingly dominant invasive plant species have lower nutritional value and donot support pronghorn populations at the same level as native shrub communities in the great basin. FAT reservesat the start of the winter season (e.g. carried over from summer range) are important for winter survival and forfemales to carry developing young to full term. Therefore, knowledge of nutritional resources on seasonal rangesis important for pronghorn management. This collaborative effort between oregon department of fish and wildlifeand university of nevada reno is designed to evaluate movements, nutritional ecology, and impacts of large scalechanges to the landscape on pronghorn demographics in oregon.