Hornaday, William Temple (hôrˈnədā) [key], 1854–1937, American naturalist, b. Plainfield, Ind. He was educated at Iowa State College (now Iowa State Univ.), continued his study of zoology and museology in Europe, and was chief taxidermist (1882–90) of the U.S. National Museum. As the first director (1896–1926) of the New York Zoological Park and as an author, Hornaday was a leader in wildlife conservation. His book Extermination of the American Bison (1887) helped to save the bison from extinction. His works also include the classic American Natural History (1904), books on wild animals, and Thirty Years' War for Wild Life (1931).