North America's bear areas map: This map shows the overlapping geographic ranges of three types of bears that inhabit North America - polar bears, black. The American black bear (Ursus americanus) is a medium-sized bear native to North America. It is the continent's smallest and most widely distributed bear Taxonomy and evolution · Distribution and population · Habitat · Description. Vegetation - the Dietary Mainstay. Vegetation is the primary bear food in northeastern Minnesota when all seasons are considered. In April, flower parts of aspen.