Frank Michler Chapman (June 12, 1864 – November 15, 1945) was a U.S. ornithologist.

Chapman was born in West Englewood, New Jersey and attended Englewood Academy. He joined the staff of the American Museum of Natural History in 1888 as assistant to Joel Asaph Allen. In 1901 he was made associate Curator of Mammals and Birds and in 1908 Curator of Birds.

Chapman came up with the original idea for the Christmas Bird Count.

Frank Chapman also wrote many ornithological books such as, Bird Life, Birds of Eastern North America, Bird Studies With a Camera, and Life in an Air Castle.

Chapman accompanied Theodore Roosevelt on his 1913 expedition to explore the Rio da Duvida, "The River of Doubt."

One Child Frank Chapman, Jr. who married Gladys Swarthout

American ornithologists | 1864 births | 1945 deaths

Frank Chapman | Frank Michler Chapman | Frank Michler Chapman