Report Upon Geographical and Geological Explorations and Surveys West of the One Hundredth Meridian:
Wheeler, Geo. M. & John J. Stevenson
The Temple of Tepoztlan, Mexico
Birds in Bermuda
Slaughter, Richard A.
Sibley's Backyard Birds of the Midwest
Sibley, David Allen
Hawks and Owls of North America: A Complete Guide to North American Birds of Prey
Heintzelman, Donald S.
The Avifauna of Tiburon Island, Sonora, Mexico, with Descriptions of Four New Races
van Rossem, A.J.
The Murres: Their Distribution, Populations and Biology A Study of the Genus Uria
Tuck, Leslie M.
Grouse and Quails of North America
Johnsgard, Paul A.
Owls of North America [PB]
The Birds of North and Middle America. Part X
Ridgway, Robert & Herbert Friedmann
Catalogue of the Birds of the Americas and Adjacent Islands, Part I, Number 2. Sphenisciformes, Gavi
Hellmayr, Charles E; Conover, Boardman; Cory, Charles B.
Catalogue of the Birds of the Americas and Adjacent Islands, Part I, Number 3. Charadriiformes