Birds of Colorado

Travels with Charley: In Search of America

H is for Hawk: A BBC2 Between the Covers pick

Mushrooms: A Falcon Field Guide

Falcon Pocket Guide: Trees

Birds of Florida

Field Guide to the Birds of Oman

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 North 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 Alaska

The Field Guide to Dumb Birds of North America

The Helm Guide to Bird Identification

DK National Parks of the USA

DK USA

Lonely Planet California