David Allen Sibley

David Allen Sibley (born 1962, in Plattsburgh, New York) is an American naturalist. The son of ornithologist Fred Sibley, he began watching and drawing birds at a very young age, and spent most of the 1980s and 90s traveling all over the North American continent in search of birds. He is the author and illustrator of The Sibley Guide to Birds (and several other books about birds), as well as the Sibley Guide to Trees.

Photo by Slowking4 (Own work) [GFDL 1.2 (http://www.gnu.org/licenses/old-licenses/fdl-1.2.html)], via Wikimedia Commons.