by Sparks, John.
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White owl, barn owl
Owls
Owls : hunters of the night
The wonder of owls
The book of North American owls
All about owls
Owls of the United States and Canada : a complete guide to their biology and behavior
Owling : enter the world of the mysterious birds of the night
The book of owls
Otis the owl
Tiger with wings : the great horned owl
The great gray owl : phantom of the northern forest
So you want to be an owl
The owl in the tree
Whooo knew? : the truth about owls
Owls! : strange and wonderful
Alfie & me : what owls know, what humans believe
What an owl knows : the new science of the world's most enigmatic birds
Greta the great horned owl : a true story of rescue and rehabilitation
The owl who liked sitting on Caesar : living with a tawny owl
Hawks and owls of eastern North America
Golden eagle vs. great horned owl
Baby owl
Owls of the eastern ice : a quest to find and save the world's largest owl
Wesley the owl [LP] : the remarkable love story of an owl and his girl
Imperial dreams : tracking the imperial woodpecker through the wild Sierra Madre
Parrots over Puerto Rico
Falcon
Hummingbirds
H is for hawk [LP]
Condor : to the brink and back--the life and times of one giant bird
The American eagle :a photographic portrait
Duet : our journey in song with the northern mockingbird
The barn owls
Soper, Tony (joint author.)
English
Owls.