Reference

Field Guide to North American Flycatchers (Kingbirds and Myiarchus)

The Arctic Guide (Wildlife of the Far North)

All About Birds Southwest

A Swift Guide to Butterflies of Mexico and Central America (Second Edition)

The World Atlas of Trees and Forests (Exploring Earth's Forest Ecosystems)

Wildlife of Ecuador (A Photographic Field Guide to Birds, Mammals, Reptiles, and Amphibians)

Wasps (The Astonishing Diversity of a Misunderstood Insect)

Penguins (The Ultimate Guide Second Edition)

Carnivores of the World (Second Edition)

Field Guide to Sharks, Rays and Chimaeras of the East Coast of North America

Lichenpedia (A Brief Compendium)

Hawks at a Distance (Identification of Migrant Raptors)

Butterfly Gardening (The North American Butterfly Association Guide)

Dinopedia (A Brief Compendium of Dinosaur Lore)

The Bees in Your Backyard (A Guide to North America's Bees)

Teesdale's Special Flora (Places, Plants and People)

Mammals of North America (Second Edition)

All About Birds California

Birds of East Asia (China, Taiwan, Korea, Japan, and Russia)

Insectpedia (A Brief Compendium of Insect Lore)

Birds of Costa Rica - 9780691203355

Horses of the World

Field Guide to North American Flycatchers (Empidonax and Pewees)

New Guinea (Nature and Culture of Earth's Grandest Island)

Treepedia (A Brief Compendium of Arboreal Lore)

Fungipedia (A Brief Compendium of Mushroom Lore)

British and Irish Wild Flowers and Plants (A Pocket Guide)

Birds of Southern Africa

The Kingdom of Fungi

All About Birds Northeast (Northeast US and Canada)

Shells of the World (A Natural History)

Birdpedia (A Brief Compendium of Avian Lore)

British and Irish Birds (A Pocket Guide)

Beetles of Western North America

The Complete Birds of the World (Every Species Illustrated)

How to Be an Urban Birder

Flight Identification of European Passerines and Select Landbirds (An Illustrated and Photographic Guide)

Birds of Europe (Third Edition)

Canids of the World (Wolves, Wild Dogs, Foxes, Jackals, Coyotes, and Their Relatives)

Hummingbirds (A Celebration of Nature's Jewels)

Spiders of North America

Dinosaur Facts and Figures (The Theropods and Other Dinosauriformes)

How Plants Work (Form, Diversity, Survival)

Birds of Prey of the West (A Field Guide)

Wildlife of India

Birds of Botswana

All About Birds Northwest (Northwest US and Canada)

Clouds (How to Identify Nature's Most Fleeting Forms)

Field Guide to North American Flycatchers (Kingbirds and Myiarchus)

The Arctic Guide (Wildlife of the Far North)

All About Birds Southwest

A Swift Guide to Butterflies of Mexico and Central America (Second Edition)

The World Atlas of Trees and Forests (Exploring Earth's Forest Ecosystems)

Wildlife of Ecuador (A Photographic Field Guide to Birds, Mammals, Reptiles, and Amphibians)

Wasps (The Astonishing Diversity of a Misunderstood Insect)

Penguins (The Ultimate Guide Second Edition)

Carnivores of the World (Second Edition)

Field Guide to Sharks, Rays and Chimaeras of the East Coast of North America

Lichenpedia (A Brief Compendium)

Hawks at a Distance (Identification of Migrant Raptors)

Butterfly Gardening (The North American Butterfly Association Guide)

Dinopedia (A Brief Compendium of Dinosaur Lore)

The Bees in Your Backyard (A Guide to North America's Bees)

Teesdale's Special Flora (Places, Plants and People)

Mammals of North America (Second Edition)

All About Birds California

Birds of East Asia (China, Taiwan, Korea, Japan, and Russia)

Insectpedia (A Brief Compendium of Insect Lore)

Birds of Costa Rica - 9780691203355

Horses of the World

Field Guide to North American Flycatchers (Empidonax and Pewees)

New Guinea (Nature and Culture of Earth's Grandest Island)

Treepedia (A Brief Compendium of Arboreal Lore)

Fungipedia (A Brief Compendium of Mushroom Lore)

British and Irish Wild Flowers and Plants (A Pocket Guide)

Birds of Southern Africa

The Kingdom of Fungi

All About Birds Northeast (Northeast US and Canada)

Shells of the World (A Natural History)

Birdpedia (A Brief Compendium of Avian Lore)

British and Irish Birds (A Pocket Guide)

Beetles of Western North America

The Complete Birds of the World (Every Species Illustrated)

How to Be an Urban Birder

Flight Identification of European Passerines and Select Landbirds (An Illustrated and Photographic Guide)

Birds of Europe (Third Edition)

Canids of the World (Wolves, Wild Dogs, Foxes, Jackals, Coyotes, and Their Relatives)

Hummingbirds (A Celebration of Nature's Jewels)

Spiders of North America

Dinosaur Facts and Figures (The Theropods and Other Dinosauriformes)

How Plants Work (Form, Diversity, Survival)

Birds of Prey of the West (A Field Guide)

Wildlife of India

Birds of Botswana

All About Birds Northwest (Northwest US and Canada)

Clouds (How to Identify Nature's Most Fleeting Forms)