Mexico

The New Stokes Field Guide to Birds: Eastern Region – Little Brown and Company. View on Amazon
Where to Watch Birds in Central America, Mexico, and the Caribbean (Princeton Field Guides (19)) – 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 New Mexico Field Guide – Used Book in Good Condition. View on Amazon
National Audubon Society Field Guide to North American Birds, Western Region – AUDBN FG: BIRDS WESTERN. View on Amazon
Birds of Oklahoma Field Guide – Used Book in Good Condition. View on Amazon
Peterson Field Guide to Birds of Northern Central America (Peterson Field Guides) – Houghton Mifflin. View on Amazon