Birds of Colorado

H is for Hawk: A BBC2 Between the Covers pick

Field Guide to the Birds of Oman

Mushrooms: A Falcon Field Guide

Falcon Pocket Guide: Trees

Just Passin' Thru: A Vintage Store, the Appalachian Trail, and a Cast of Unforgettable Characters

Butterflies & Moths

Wesley the Owl: The Remarkable Love Story of an Owl and His Girl

Animal Tracks: A Falcon Field Guide

The Handbook of Bird Identification: For Europe and the Western Palearctic

Birds of South Carolina

Alex & Me: How a Scientist and a Parrot Discovered a Hidden World of Animal Intelligence—and Formed a Deep Bond in the Process

Birds of North Carolina

The Field Guide to Dumb Birds of North America

Birds of Alaska

The Helm Guide to Bird Identification

Birds: ID Insights: Identifying the More Difficult Birds of Britain

Field Guide to the Birds of Northern India

Field Guide to Birds of the Indian Subcontinent: India, Pakistan, Sri Lanka, Nepal, Bhutan, Bangladesh and the Maldives

Parrots of the World