The Kiger Mustang is a strain of mustang horse located in the southeastern part of the U.S. state of Oregon. Originally feral horses with specific conformation traits discovered in 1977, the name also applies to their bred-in-captivity progeny. The Bureau of Land Management (BLM) administers two herd management areas for Kiger Mustangs in the Burns District— Kiger and Riddle Mountain, in the Steens Mountain area. DNA testing has shown that Kiger Mustangs are descended largely from Spanish horses brought to North America in the 17th century, a bloodline thought to have largely disappeared from mustang herds before the Kiger horses were found (Wikipedia).