preserves the route taken by Chief Joseph and his band when they tried to reach Canada in 1877. The sites include: Battle of Bear Paw – Blaine County, Montana Battle of the Clearwater – Idaho County, Idaho Battle of White Bird Canyon – Idaho County, Idaho Big Hole National Battlefield – Beaverhead County, Montana Camas Meadows Battle Sites – Clark County, Idaho Camas Prairie – Idaho County and Lewis County, Idaho Camp Chopunnish – Idaho County, Idaho Joseph Canyon – Wallowa County, Oregon and Asotin County, Washington Old Chief Joseph Gravesite – Wallowa County, Oregon Weippe Prairie – Weippe, Idaho Ecology The NPNHP sites cover three main ecoregions. The first, found at the sites in the Palouse grasslands and Missouri Basin, is shortgrass prairie. These flat or slightly rolling prairies include rivers and streams, and have an altitude of about . The second, found in the plateaus of the Columbia and Snake rivers, is sagebrush steppe at around 3,000 ft in altitude; it includes lava fields and flows. The third, found in the sites in the Blue Mountains, Salmon River Mountains, southwestern Montana and northern Rocky Mountains, is conifer and alpine meadows. These high-elevation sites have lower temperatures and greater precipitation than the other ecoregions. Numerous species of mammals, amphibians, reptiles, birds and invertebrates inhabit the various park sites. Several of these species are classified in terms of their status as "threatened," "endangered" or "sensitive" at the state level. Montana Arctic grayling, mountain plover, swift fox, great grey owl, boreal owl and several fish species are all sensitive species that inhabit the park, while gray wolf and bald eagles are sometimes seen. Managers of the park have several ecological concerns including issues of invasive plant species, the degradation of animal habitat due to human activity, the protection of endangered species, and dealing with effects of climate change. See also Henry H. and Eliza Hart Spalding, Prebyterian missionaries to the Nez Perce National Parks in Idaho References External links National Historical Parks of the United States Historic districts in Montana Nez Perce tribe Nez Perce War Parks on the National Register of Historic Places in Idaho Parks on the National Register of Historic Places in Montana Parks on the National Register of Historic Places in Oregon Parks on the National Register of Historic Places in Washington (state) Archaeological sites in Idaho Archaeological sites in Montana Archaeological sites in Oregon Archaeological sites