On July, 25, 2011 the American Wild Horse Preservation (AWHPC) joined the Western Watersheds Project (WWP), a leading environmental group, filed suit to stop the Bureau of Land Management (BLM) from rounding up every wild horse it can find in the White Mountain and Little Colorado Herd Management Areas (HMAs), permanently removing an estimated of the horses from the range and returning 177 castrated stallions to the one million acre public lands complex. The lawsuit was filed in U.S. District Court for the District of Columbia by a leading public interest law firm, Meyer, Glitzenstein and Crystal. Joining AWHPC and WWP as plaintiffs are a Green River, Wyoming couple, Greg and Donna Duckworth, and wildlife photographer Carol Walker.

UPDATE: On August 2, Department of Justice attorneys representing the BLM, in this case, informed the court that the BLM was withdrawing its mass sterilization plan for these HMAs.The agency is expected to announce a new course of action by August 5. See below for news articles and news release. On August 8, the case was discharged from federal court by Judge Amy Berman Jackson with an order noting that we had "won!"

In addition, a number of leading scientists and experts in the fields of wild horse biology, genetics, behavior and reproduction have filed declarations in support of the action, which charges the BLM for violating the Wild Free-Roaming Horses and Burros Act and the National Environmental Policy Act by implementing an action that will convert two viable, free-roaming populations of wild horses to "minimally-reproducing" herds comprised primarily of geldings (castrated male horses.)

In the words of one of the experts, Dr. Jay Kirkpatrick, director of the Science and Conservation Center,“[t]he very essence of the wild horse . . . is the social organization and social behaviors. Geldings (castrated male horses) will no longer exhibit the natural behaviors of non-castrated stallions,” and “gelded stallions will not keep their bands together, which is an integral part of a viable herd. These social dynamics were molded by millions of years of evolution, and will be destroyed if the BLM returns castrated horses to the HMAs.”