Atitlan is located in the Guatemalan volcanic belt and includes Lake Atitlan, volcanoes San Pedro, Toliman, and Atitlan, as well as Cerro Tecpan and the conifer forests around Totonicapan. This IBA ranges in elevation from 500 to 3500 m.
More than 320 bird species have been recorded in Atitlan. The area is important for range-restricted birds of the North Central American Highland (20 species reported) and the North Central American Pacific slope (2 species), and for biome-restricted species of the Madrean Highlands (47 species) and the Pacific Arid Slope (5 species). The site supports populations of four threatened species, Horned and Highland Guan (Oreophasis derbianus and Penelopina nigra), Pink-headed Warbler (Ergaticus versicolor), and Azure-rumped Tanager (Tangara cabanisi) (Méndez 2000, Eisermann 2006, Eisermann et al. 2006, González García et al. 2006, Eisermann & Avendaño 2006, Rivas Romero 2006, Eisermann et al. 2007) Lake Atitlán supported once a small population of the now extinct Atitlan Grebe (Podilymbus gigas) (Hunter 1988).
BirdLife International (2019) Important Bird Areas factsheet: Atitlan. Downloaded from http://www.birdlife.org on 20/02/2019.