Kiger Mustangs are most often dun in colour, although they are found in other solid colours. Compact and well-muscled in appearance, their coloration and phenotype make them some of the most desired by private buyers when horses are removed from the feral herds. The BLM rounds up the horses from the two herd management areas every three to four years, and auctions excess horses to the public, returning horses to public lands that meet the desired coloration and phenotype and sometimes exchanging horses between the two herds to maintain genetic diversity. Horses in private ownership may be registered in several breed associations, the largest and oldest being the Kiger Mesteño Association, established in 1988.