The Sonso Lagoon is one of the only remaining wetlands in the Cauca Valley and one of Colombia’s best wetland birding localities. The reserve sits at 950 m (3,100 ft.), and encompasses 2,000 ha (5,000 ac), and is home to the near-endemic Scrub Tanager and Bar-crested Antshrike. Apical Flycatcher and Grayish Piculet are two birds that are relatively easy to see in the tropical dry forests surrounding the lagoon. More than 160 species have been recorded t at Sonso Lagoon, including Ruby Topaz, Jet Antbird, Great Antshrike, Spectacled Parrotlet, Crested Caracara, and the secretive Striped Cuckoo. The wetland is teeming with aquatic birds, including Blue-winged Teal, Fulvous and Black-bellied Whistling-Ducks, Limpkin, Anhinga, Blackish Rail, and Black-crowned Night-heron. Always a treat but needing a bit of luck, views of Horned Screamer are sometimes possible.