This small biological reserve, 15 minutes east of the town of La Fortuna, is a model of conservation. Once open farmland, this reserve has been allowed to revert to forest and now teems with wildlife. A main 1.5-hour trail winds through the forest where visitors can see a number of the 154 bird species recorded here, including honey-creepers, euphonias, tanagers & toucans. Several slow-moving sloths and other curious creatures live here too.