The NAS traces its roots to the 1880s, when it began as an organization to promote the protection and appreciation of birds. Although the NAS began expanding its activities into broader environmental concerns during the 1970s and 1980s, it remains identified primarily with the naturalist and bird artist John James Audubon. Hence, NAS is considered a non-threatening wildlife advocate, supported by weekend birders and moderate environmentalists who enjoy taking walks through NAS sanctuaries. Though nationally known, its controversial stances are few and far between.