Feathers from the Prairie: A Short History of Upland Game Birds
Johnson, Morris D.
Physiological Strategies in Avian Biology
PHILLIPS, J.G., P.J. BUTLER, and P.J. SHARP.
Form and Function in Birds. Volume 2
King, A.S. & J. McLelland
Form and Function in Birds. Volume 1
Hawks, Eagles and Falcons of North America: Biology and Natural History
Johnsgard, Paul A.
North American Owls: Biology and Natural History [First Edition]
Bird Anatomy for Artists: Comprehensive Guide to Drawing Birds for Artists and Bird Lovers Second ed
Birdlife of the Churchill Region: Status, History, Biology
Jehl, Joseph R.
The Collected Scientific Papers of the Late William Alexander Forbes
Systematics and the Origin of Species From the Viewpoint of a Zoologist
Stripped Bare: The Art of Animal Anatomy
The Cornell Lab of Ornithology Handbook of Bird Biology, Third edition
Lovette, Irby J. (Editor), John W. Fitzpatrick (Editor)