Birds in Kansas. Volumes I & II

Thompson, Max C. & Charles Ely

Kansas Breeding Bird Atlas

Busby, William H.; Zimmerman, John L.

Peterson Field Guide to Birds of Eastern and Central North America, Seventh Edition

Peterson, Roger Tory; Peterson, Virginia Marie

Illustrations by Peterson, Roger Tory

ABA Birdfinding Guide: A Birder's Guide to Southern California. Fifth edition

SCHRAM, Brad

ABA Birdfinding Guide: A Birder's Guide to the Rio Grande Valley, Fourth edition

LOCKWOOD, Mark; MCKINNEY, William B.; PATON, James N.; ZIMMER, Barry R.

Guide to the Birds of Alaska, 6th edition

Armstrong, Robert H.

Peterson Field Guide to Birds of North America, Second edition

Peterson, Roger Tory

Birds of New York State

Bull, John

Kaufman Field Guide to Birds of North America

Kaufman, Kenn

A Photographic Guide to the Birds of Wintergreen, with an Introduction to the Area and to Other Loca

FAINTICH, Marshall

Birds of Missouri: Their Distribution and Abundance

Robbins, Mark B.; Easterla, David A.

ABA Birdfinding Guide: A Birder's Guide to the Rio Grande Valley, Second edition

Holt, Harold R.