The Structure and Classification of Birds
BEDDARD, Frank E.
Estrildid Finches of the World
The Birds of the Philippine Islands
The Birds of the Kenya Colony and Uganda Protectorate
Jackson, Frederick John
Life Histories of North American Birds [Complete Set]
BENT, Arthur Cleveland and Collaborators.
Handbook of the Birds of Europe, the Middle East, and North Africa: Complete set [BWP]
CRAMP, Stanley, Chief Editor, et al.
Bustards, Hemipodes, and Sandgrouse: Birds of Dry Places
Johnsgard, Paul A.
Eagles, Hawks and Falcons of the World. Two volumes.
BROWN, Leslie and Dean AMADON.
Pictorial Checklist of Colorado Birds
Bailey, Alfred M. & Robert J. Niedrach.
Field Book of Birds of the Panama Canal Zone
Sturgis, Bertha B.
A Guide to Bird Watching
Hickey, Joseph J.
Rails of the World: A Monograph of the Family Rallidae
Ripley, S. Dillon