CO: American Birding Association Field Guide to the Birds of Colorado George Mayfield State & Province Guides December 6, 2016
A Field Guide to Western Reptiles and Amphibians (Peterson Field Guides) George Mayfield Reptiles & Amphibians, Reptiles & Amphibians: North America July 8, 2016
Petrels, Albatrosses, and Storm-Petrels of North America: A Photographic Guide George Mayfield Seabird Guides March 4, 2016
Peterson Field Guide to Birds of Northern Central America George Mayfield Belize, El Salvador, Guatemala, Honduras, Mexico & Central America November 30, 2016
Birds of the Horn of Africa: Ethiopia, Eritrea, Djibouti, Somalia, and Socotra (Princeton Field Guides) George Mayfield Africa, Birds November 30, 2016
Sparrows of the United States and Canada: The Photographic Guide George Mayfield Songbirds March 4, 2016
Birds of Southern Africa: Fourth Edition (Princeton Field Guides) George Mayfield Africa, Botswana, South Africa March 22, 2016
Larkwire Birdsong Master Birder: Land Birds of North America (iOS App) George Mayfield Apps, Birding App February 23, 2017
Birds of Prey of Australia: A Field Guide 2nd ed. George Mayfield Australia, Australia, New Zealand, South Pacific, Raptors April 5, 2016
