The Central Valley Highlands and Aguas Zarcas are especially rewarding for hummingbird enthusiasts. Here, you may encounter sought-after species such as the delicate Black-crested Coquette, the impressive White-tipped Sicklebill, the vivid Violet-headed Hummingbird, and the striking Violet Sabrewing. In addition to hummingbirds, the region is home to many classic Central Valley birds, including colorful tanagers, trogons, and toucans. Sites like The Nest in Aguas Zarcas further enhance the experience, occasionally rewarding visitors with rare and unexpected sightings amid lush, mountainous surroundings.