Isla Guayabo, Islas Negritos and Isla de los Pájaros Biological Preserves
Access is restricted to these islands in the Gulf of Nicoya due to their unique ecological conditions. Guayabo is a solid sedimentary rock, seven hectares in area, with a maximum altitude of 50 meters. Covered with trees, thorny plants and coyol palms, the island is a nesting ground for the laughing seagull, the brown booby, the frigate bird and the largest brown pelican population in Costa Rica.
Islas Negritos are two volcanic rocks featuring tall headlands. Their 80 hectares shelter a semi-deciduous forest, refuge to frigate birds, laughing seagulls, brown boobies, parrots, white-tipped doves and brown pelicans. Because of their location in the Gulf of Nicoya, these islands and Guayabo may be seen from cabotage and tourist vessels on the way to Paquera and Islas Tortugas. Isla de los Pájaros has a rounded dome shape. Only four hectares in area, the island is made up of sedimentary rock and features a tropical dry-to-wet forest where pelicans, frigate birds and brown boobies nest. It is a short distance from Costa de Pájaros.