Biology: Ornithology

History of the Indiana Audubon Society by Charles E. Keller

For the birds by U.S. Fish & Wildlife Service

Bird almanac : the ultimate guide to essential facts & figures of the world’s birds by David M. Bird

Audubon's Birds of America by Audubon, John James, 1785-1851.

Howard and Moore Complete checklist of the birds of the world by Edward C. Dickinson

Sibley's birding basics by David Allen Sibley

Field guide to the birds of North America by National Geographic Society

Birds of North America by Kenn Kaufman

Birdwatcher’s companion to North American birdlife by Christopher W. Leahy

Shorebirds of North America : the photographic guide by Dennis Paulson

Field guide to the birds of eastern and central North America by Roger Tory Peterson and Virginia Marie Peterson

Sibley guide to bird life & behavior by David Allen Sibley

Sibley field guide to birds of eastern North America by David Allen Sibley

Sibley guide to birds by David Allen Sibley, National Audubon Society

American Bird Conservancy guide to the 500 most important bird areas in the United States : key sites for birds and birding in all 50 states by Robert M. Chipley

Fifty common birds of the upper Midwest by Dana Gardner

Birding in Ohio by Tom Thomson

Birds of Illinois by H. David Bohlen

Indiana birds and their haunts : a checklist and finding guide by Charles E. Keller, Shirley A. Keller, and Timothy C. Keller

Birds of Ohio by Bruce G. Peterjohn

Complete guide to the birds of Europe by Lars Svensson and Peter J. Grant

Field guide to hawks of North America by William S. Clark and Brian K. Wheeler

Tanagers, cardinals, and finches of the United States and Canada : the photographic guide by David Beadle and J.D. Rising

Life of birds (film) by David Attenborough

Nature’s music : the science of birdsong by Peter Marler, Hans Slabbekoorn

Handbook of the Birds of the World by Josep del Hoyo (Editor); Andrew Elliott (Editor); Jordi Sargatal (Editor); Josep del Hoyo Calduch (Editor)

Birds of North America by American Ornithologists' Union

Atlas of breeding birds of Indiana by John S. Castrale

Birds of Indiana by Russell E. Mumford and Charles E. Keller

Common Birds of Indiana by Earl Brooks

History of the Amos W. Butler Audubon Society by Charles E Keller

Bird feeding : backyard habitat for wildlife by U.S. Fish and Wildlife Service