The National Geographic Complete Birds of North America
A reasonable desk reference for bird identification, though not one I use as much as my copy of The Sibley Guide to Birds.
Birding Books
The Sibley Guide to Bird Life and Behavior
The Sibley Guide to Bird Life and Behavior is the companion book to the Sibley Guide to Birds. Only it’s a behavior reference not a spotting guide. Is that important for bird photographers? You betcha.
The Sibley Guide to Birds
Arguably the definitive field spotting guide for bird watchers and photographers in North America. Provides renderings of various plumage patterns and key spotting marks.
Photography Books
Light, Science and Magic
Light Science and Magic is the photographer’s text on the fundamentals of light, lighting and the behavior of light. It gives you the fundamental understanding you need to lighte any subject.
The Moment it Clicks
Tips and stores from the photographic front lines from Joe McNally. Not a reference so much as inspiration.
The Photographer’s Eye: Composition and Design for Better Digital Photos
A solid look at the visual design (composition, color, pose, etc.) that goes into making better pictures.