The Central Valley of Costa Rica is a challenging place for biodiversity, as is often the case in areas heavily impacted by human activity. However, over 500 bird species can still be found here, including a species endemic to Costa Rica, Cabanis’s Ground Sparrow . This guide includes illustrations of 420 bird species from Costa Rica's Central Valley, detailing their distribution, habitat, and other key information. Likely the most comprehensive guide on the region’s birds, it also provides an honest insight into the problems caused by human activity. It is an excellent complement for those seeking specific knowledge of the area.