Photographs depicting nesting habits accompany descriptions of more than one hundred subspecies of hawks, eagles, falcons, buzzards, condors, and owls.
Arthur Cleveland Bent (1866 – 1954) was an American ornithologist. He is notable for his encyclopedic 21-volume work, Life Histories of North American Birds, published 1919-1968 and completed posthumously, which received the John Burroughs Medal in 1940.