Eighty-two wild horses arrived at the ISPMB in South Dakota from the Sheldon Wildlife Range (SWR) in northern Nevada. The SWR is not mandated by Congress to protect wild horses and proposes to reduce herds to 125 animals with the eventual possibility of eliminating wild horses altogether on the range.

Herd Management Philosophy
Currently, ISPMB is continuing its observation and study of the herds so that a model management program can be derived. Fertility and recruitment rates are observed along with behaviors of bands and their interaction with each other. Each herd is blood typed and DNA tested. Right now the herds are far more genetically diverse compared to any breed of domestic horse in our country.