The Ruff: Individuality in a Gregarious Wading Bird
Van Rhijn, Johan G.
A Field Guide to the Nests, Eggs and Nestlings of British and European Birds
The Great Gray Owl: Phantom of the Northern Forest
NERO, Robert W.
Population Ecology of the Cooperatively Breeding Acorn Woodpecker [PB]
Koenig, Walter D.; Mumme, Ronald L.
Manual of Neotropical Birds
Blake, Emmet Reid
The Ducks, Geese and Swans of North America: a Vade Mecum for the Naturalist and the Sportsman
Kortright, Francis H.
Illustrations by T.M. Shortt
Cowbirds and Other Brood Parasites
Ortega, Catherine P.
Woodpeckers: An Identification Guide to the Woodpeckers of the World
Winkler, Hans, with David A. Christie and David Nurney
Hawks, Eagles and Falcons of North America: Biology and Natural History
Johnsgard, Paul A.
North American Owls: Biology and Natural History [First Edition]