American Bison Society
The American Bison Society (ABS) was a conservation organization founded in 1905 by the New York Zoological Society to help save the bison from extinction and raise public awareness about the species by pioneering conservationists and sportsmen including Ernest Harold Baynes (the Society's first secretary), William T. Hornaday, Madison Grant and Theodore Roosevelt. Over 40 million American bison (Bison bison) once roamed the plains and grasslands from Mexico to central Canada, shaping the landscape with their migrations, grazing patterns, and behavior.