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State Herd Area: Little Owyhee HMA, Nevada

In 1971, wild horses and burros were found roaming across 53.8 million acres of Herd Areas (HAs), of which 42.4 million acres were under the Bureau of Land Management’s (BLM’s) jurisdiction. Today the BLM manages wild horses and burros in subsets of these HAs, known as Herd Management Areas (HMAs) that comprise 31.6 million acres, of which 26.9 million acres are under BLM management.

The Little Owyhee HMA is located in eastern Humboldt and western Elko counties, approximately 40 air miles northeast of Winnemucca, Nevada. The HMA contains approximately 460,128 acres of public and private lands. The area is within the Columbia Plateau and Great Basin physiographic regions. On many of the low hills and ridges that are scattered throughout the area, the soils are underlain by bedrock. Elevations within the HMA range from approximately 4,500 feet to 6,100 feet. The majority of the HMA lies within 5,000 to 5,500 feet elevation. The climate is continental and semi-arid with cool, moist winters and warm, dry summers. Precipitation ranges from 6 to 14 inches, occurring primarily in the winter and spring. Average annual temperature ranges from 43 to 47 degrees Fahrenheit.

The area is also utilized by domestic livestock and numerous wildlife species. Typical wildlife species found in the area include chukar, partridge, sage grouse, mule deer, pronghorn antelope, coyotes, jackrabbits, and various species of birds, rodents and reptiles. The area is used as winter range for deer and provides valuable forage during migration periods. The North Fork of the Little Humboldt River Wilderness Study Area (WSA) is also located within the HMA. Vegetation is almost entirely the sagebrush-grass types typical of the cold desert and Great Basin. Low sagebrush and big sagebrush predominate throughout the greatest portion of the areas. Other plant species include downy brome, Thurber needlegrass, Indian ricegrass, bluebunch wheatgrass, squirreltail, bluegrass, spiny hopsage, green rabbitbrush, grey rabbitbrush, bud sagebrush and winterfat. Forage species for wild horses are primarily the perennial grasses: needlegrass, ricegrass, wheatgrass, squirrel tail, and bluegrass.

The appropriate management level for wild horses in the HMA is managed in a range from 179 to 298 head. Periodic removals are conducted to maintain the population within the management range. Horses within the HMA are descendants of ranch horses that either escaped or were released into the area. The majority of the horses exhibit a bay, brown, black, or sorrel color pattern. However, there are also a number of palominos, buckskins, pintos, grays, roans and white horses.

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