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.
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
All About Backyard Birds Family Pocket Guide: Western North America
Powell, Hugh; Brian Scott Sockin, and Laura Erickson, Editors
All About Backyard Birds Family Pocket Guide: Eastern and Central North America
Being a Bird in North America, North of Mexico. Volume 1: Waterfowl to Shorebirds
Guide to the Identification and Ageing of Holarctic Waders
PRATER, A.J.; MARCHANT, J.H.; VUORINEN, J.
American Robin: Birds of North America species account
Rex Sallabanks and Frances C. James.
Waterfowl of North America, Europe, and Asia: An Identification Guide