Mexico

Birds of Oklahoma Field Guide – Used Book in Good Condition. View on Amazon
Birds of New Mexico Field Guide – Used Book in Good Condition. View on Amazon
A Field Guide to Birds of the Desert Southwest (The Geological Field Guide Series) – Used Book in Good Condition. View on Amazon
Sibley Birds West: Field Guide to Birds of Western North America – Sibley Birds West Field Guide to Birds of Western North America. View on Amazon
Birds of Mexico and Central America (Princeton Illustrated Checklists) – Princeton University Press. View on Amazon
A Bird-Finding Guide to Mexico (Comstock Books) – Used Book in Good Condition. View on Amazon
National Audubon Society Field Guide to North American Birds, Western Region – Random House Audubon Field Guide: Birds Western by Miklos Udvardy - 9780679428510. View on Amazon
Peterson Field Guide to Birds of Northern Central America (Peterson Field Guides) – Houghton Mifflin. View on Amazon