Wildlife of Ecuador: A Photographic Field Guide to Birds, Mammals, Reptiles, and Amphibians (Princeton University Press (WILDGuides)) George Mayfield Ecuador August 17, 2017
The Field Guide to the Birds of Australia 9th Edition George Mayfield Australia, Australia, New Zealand, South Pacific March 30, 2016
National Audubon Society Field Guide to North American Mammals (National Audubon Society Field Guides (Hardcover)) George Mayfield Mammals February 24, 2017
CA: American Birding Association Field Guide to Birds of California (American Birding Association State Field) George Mayfield California December 6, 2016
Birds of New Guinea: Second Edition (Princeton Field Guides) George Mayfield Australia, New Zealand, South Pacific, New Guinea, Papua New Guinea, South Pacific March 30, 2017
Dragonflies and Damselflies of the West (Princeton Field Guides) George Mayfield Dragonflies & Damselflies: North America, Insects April 7, 2016
Birding Northeast Ecuador: Birding Areas of Northeast Ecuador George Mayfield Birds, Ecuador, South America November 30, 2016
Peterson Field Guide to Reptiles and Amphibians of Eastern and Central North America, Fourth Edition (Peterson Field Guides) George Mayfield Reptiles & Amphibians, Reptiles & Amphibians: North America July 8, 2016
The Slater Field Guide to Australian Birds George Mayfield Australia, Australia, New Zealand, South Pacific March 22, 2017
The Birds of Costa Rica: A Field Guide (Zona Tropical Publications) George Mayfield Costa Rica, Mexico & Central America March 4, 2016
Sparrows of the United States and Canada: The Photographic Guide George Mayfield Songbirds March 4, 2016
BirdsEye – Global Bird Finding Guide (iOS & Android App) George Mayfield Apps, Birding App March 23, 2016
