La Selva Biological Station covers an expanse of lowland primary and secondary rainforest on the Caribbean slope of northwestern Costa Rica. It's owned and operated by the Organization for Tropical Studies and serves primarily as a research and educational facility for university staff and students. Amateur birders are welcome but are not allowed to walk the trails through the primary forest unless accompanied by a qualified guide.
La Selva is a fabulous birding destination with over 400 species recorded in the area. Terrific birding opportunities are available in the more open areas both outside and inside the entrance gate. It's perhaps the best place in Costa Rica to see Tinamous, which are normally very secretive but have become accustomed to the presence of humans. The highly endangered Great Green Macaw regularly puts in an appearance at La Selva, though the main breeding populations are in more remote areas to the northwest. La Selva is a great place to see many species of hummingbirds and tanagers, including the beautiful Passerini's Tanager.
