Maunsell Schieffelin Crosby (February 14, 1887 - 1931) was an ornithologist, writer, and farmer. Crosby was the son of Ernest Howard Crosby,[1] a noted author and reformer who served in the seat in the New York State Legislature formerly held by Theodore Roosevelt.[2] Crosby was also a nephew of Eugene Schieffelin, the bird enthusiast who introduced the starling to the U.S.[3] The 1933 book The Birds of Dutchess County by Ludlow Griscom based much of its information on records compiled by Crosby.[4]