A Guide to the Birds of Costa Rica, F. Gary Stiles and Alexander F. Skutch, Cornell University Press (the definitive text, but large and cumbersome as a field guide)

The Birds of Mexico and Adjacent Areas, Ernest Preston Edwards, University of Texas Press

A Neotropical Companion, John C. Kricher, Princeton University Press

Costa Rica: The Ecotravellers' Wildlife Guide, Les Beletsky ("the best wildlife guide if you want just one book for everything", Rob Rachowiecki)

Book Source

Franklin Maps, King of Prussia, 610-265-6277

Travel Guides

National Geographic Traveler Costa Rica, Christopher P. Baker, National Geographic Society

Lonely Planet Costa Rica, Rob Rachowiecki, Lonely Planet Publications

General Reading

Tropical Nature, Adrian Forsyth and Ken Miyata, Simon and Schuster

Sarapiqui Chrinicle, A Naturalist in Costa Rica, Allen M. Young, Smithsonian Institution Press

Birds of Tropical America: A Watcher's Introduction to Behavior, Breeding, and Diversity, Steven Hilty, Chapters Publishing Ltd.