Owls of the World
Owls: A Guide to the Owls of the World
Konig, Claus;Becking, J. H.;Weick, Friedhelm
Hawks, Owls and Wildlife
Craighead, John J.; Frank C. Craighead
Spotted Owls: Shadows in an Old-Growth Forest
Cannings, Richard & Jared Hobbs
Birds by Night
The Great Gray Owl: Phantom of the Northern Forest
NERO, Robert W.
North American Owls: Biology and Natural History [First Edition]
Johnsgard, Paul A.
The Eastern Screech Owl: Life History, Ecology and Behavior of Rural and Suburban Populations
Gehlbach, Frederick R.
Owls of the Northern Hemisphere
Neotropical Owls: Diversity and Conservation
Enriquez, Paula (Editor)
Great Horned Owlets Rescue: Where There's a Will, There's a Way