Collins Guide to Animal Tracks and Signs
Bang, Preben & Preben Dahlstrom
A Field Guide to the Nests, Eggs and Nestlings of British and European Birds
Guide to the Young of European Precocial Birds
American Ornithology; or the Natural History of the Birds of the United States
WILSON, Alexander and Charles Lucian BONAPARTE.
Birds of Wisconsin
Gromme, Owen J
Manual of Neotropical Birds
Blake, Emmet Reid
Identification for Ringers
Harrier, Hawk of the Marshes: The Hawk That Is Ruled by a Mouse
The Birds of South Dakota: An Annotated Check List
Whitney, Nathaniel R.; Et. Al.
Birds New to Science: 50 Years of Avian Discoveries
The Cowbirds: A Study in the Biology of Social Parasitism
Granivorous Birds in Ecosystems: Evolution, Populations, Energetics, Adaptations, Impact and Control
Pinowski, Jan; Kendeigh, S.C.