Snowy Owl: A Visual Natural History
Bannick, Paul
Great Gray Owl: A Visual Natural History
North American Owls: Biology and Natural History [First Edition]
Johnsgard, Paul A.
Owls of the Eastern Ice: A Quest to Find and Save the World's Largest Owl
Slaght, Jonathan C.
Barn Owls: Evolution and Ecology. With Grass Owls, Masked Owls and Sooty Owls
Roulin, Alexandre
Peterson Reference Guide to Owls of North America and the Caribbean[Damaged]
Weidensaul, Scott
Nightwatchmen of Bush and Plain: Australian Owls and Owl-like Birds
Fleay, David
The Eagle Owl. Poyser Monographs
Penteriani, Vincenzo and Maria del Mar Delgado
The Owls of Southern Africa
Kemp, Alan C.
Owls of the World
Duncan, James
Neotropical Owls: Diversity and Conservation
Enriquez, Paula (Editor)
Hawks, Owls and Wildlife
Craighead, John J.; Frank C. Craighead