The Saylor Creek Wild Horse Herd lives on approximately 83,540 acres (33,810 ha) in the southern portion of the Jarbidge and Burley Field Offices of the
BLM−Bureau of Land Management in Idaho.
According to local history, the foundations of the Saylor Creek Horse Herd date back to the early 1960s when mares were captured near Challis, Idaho, and transported to an area south of Glenns Ferry, Idaho. Small bands of horses could be found in the vicinity of Dove Springs and the Sailor Creek seep. A registered stud was purchased and turned out with the mares, and colts were captured in annual roundups. This practice ended when the Saylor Creek Herd was established in accordance with the Wild and Free-Roaming Horse and Burros Act of 1971.