His family had a summer home in Tadoussac, Quebec, and his first paper was published in 1879 on the birds observed there.
Dwight was a member of the American Ornithologists' Union since its founding on September 26, 1883.
[2] He died of cancer at his home at 43 West 70th Street in New York City on February 22, 1929.
[4] After Dwight's death, Fiduciary Trust Company founder Carll Tucker purchased Dwight's collection of ornithology books as a gift for his wife Marcia Brady Tucker, daughter of Anthony N. Brady, a founder of Union Carbide.
[5] Marcia Brady Tucker, two-time director of the National Association of Audubon Societies, donated the collection to the Smithsonian Institution in 1970.