This polygon feature class represents the spatial extent and boundaries for BLM Wild Horse and Burro Herd Area polygons within Nevada. BLM Wild Horse and Burro Herd Areas have been designated by The Wild Free-Roaming Horse and Burro Act of 1971 as areas that wild horses and burros appeared to be inhabiting. Federal lands identified in 1971 but not managed for wild horses and burros are called Herd Areas. Originally designated Herd Areas contain Herd Management Areas.