The Osa Peninsula is located in south-western Costa Rica, in Puntarenas Province, with the Pacific Ocean to the west and the Golfo Dulce to the east. The peninsula was formed geologically by a faulting system that extends north into California. The peninsula is home to at least half of all species living in Costa Rica and harbours 2.5% of the biodiversity of the entire planet in less than a thousandth of a percent of its total surface area.

For casual birders and serious enthusiasts alike, Costa Rica's Osa Peninsula offers some of the best birding on the Pacific coast of Central America.

Before you leave to go birding on the Osa Peninsula, download the smartphone application today and be prepared with a specially pre-filtered listing of only the species in the region.

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Costa Rica Field Guide

Cahuita National Park

Manuel Antonio National Park

Monteverde Cloud Forest Reserve

Tortuguero National Park

Osa Peninsula

Panama

Bocas del Toro Archipelago