The purpose of this project was to survey the right-of-way of the proposed Beaver Rim road for the presence of all species of mammals, with emphasis on species considered Endangered, Threatened, or of "Special Concern." Because the part has other sources of information on species of large mammals (research by T. V. Daues employing winter tract counts for moose and furbearers), and because of practical limitations on the time available to do the survey, our efforts were concentrated on determining the distribution of species of small mammals, in particular, members of the orders Rodentia, Chiroptera, and Insectivora. Four species of mammals are considered Endangered in Michigan, three species Threatened, and two species are of Special Concern. The Endangered species include the gray wolf (Canis lupus), mountain lion or cougar (Felis concolor), lynx (Felis lynx), and Indiana bat (Myotis sodalis). The species considered to be threatened are the least shrew (Cryptotis parva), marten (Martes americana), and prairie vole (Microtus ochrogaster). Microtus pinetorum (woodland vole) and Sorex fumeus (smokey shrew) are listed as being of Special Concern. Of these, only the gray wolf, lynx, and marten are likely to occur in the Pictured Rocks area, although the mountain lion almost certainly was present in the past.