A beautiful web site with all types of information about the Sand Hills. This interesting examines journals from the early explorers into Montana and excerpts from them about wildlife and the size of their habitats. The general conclusion is that these habitats have been greatly reduced. Many journals have maps showing the routes taken. Especially check out their Biological Resources Section .
Many sources are non-technical and are identified as such.
They range from waterfowl identification guides to a study of coyotes. A searchable database of northern Prairie plants giving a lot of information on over 6,000 specimens.