Black-and-chestnut Eagle Spizaetus isidori Scientific name definitions

Tomás Rivas-Fuenzalida, Juan M. Grande, Sebastián Kohn, Felix Hernán Vargas, and Santiago Zuluaga Castañeda
Version: 2.0 — Published November 23, 2022



The Black-and-chestnut Eagle is endemic to the montane cloud forests of South America, mainly in the Andes mountain range, from northeastern Colombia and northwestern Venezuela to northwestern Argentina (11°N–28°S).


It mainly occurs from 1,200–2,500 m (occasionally between 400–3,000 m) in the Coastal Range of north-central Aragua, Carabobo, Lara, and Yaracuy (10°N); in the Andes of northwestern (8°N) Mérida, Trujillo, and Lara; and in the eastern Andes from Sierra de Perijá in Zulia(10°N) (20, Naveda-Rodríguez, personal communication). Extent of occurrence and area of occupancy in the two mountain ranges in Venezuela are 50,060 km2 and 13,548 km2, respectively (21).


It occurs from 1,600–2,800 m (occasionally between 150–3,300 m). A breeding population is located in the Sierra Nevada de Santa Marta in Magdalena (11°N), and probably also in La Guajira and César. It is present in the three ranges of the Andes: the western Andes from Chocó to Nariño (7–0°N), the central Andes from Antioquia to Nariño (6–0°N), and the eastern Andes from César to Nariño (10–0°N) (14, 22, 23, 24).


It primarily occurs from 1,500–3,000 m (occasionally between 1,100–3,500 m). It is present on both slopes of the Andes: on the western slope it occurs from Carchi to Cotopaxi (0°N–1°S), and on the eastern slope from Carchi and Sucumbios to Zamora-Chinchipe and Loja (0°N–4°S). A few pairs have been reported in the inter-Andean valley of northern Ecuador in Carchi, Imbabura, and Pichincha (0°N) (25, 26, Rivas-Fuenzalida et al., unpublished data).


It mostly occurs between 1,000–3,500 m (occasionally occurs down to 700 m). It is present only on the eastern slopes of the Andes, from Amazonas to Puno (5–14°S). It probably also occurs in Cajamarca (4°S) (27, 28, 29, Rivas-Fuenzalida et al., unpublished data).


It occurs from 1,100–2,800 m (occasionally between 800–3,200 m). It is present only on the eastern slopes of the Andes, from La Paz to Tarija (14–22°S). Records up to 4,000 m likely represent misidentified birds (30, D. Martínez, personal communication).


It largely occurs from 900–2,800 m (occasionally between 600–3,500 m). It is only present on the eastern slopes of the Andes, in the four provinces with suitable habitat: Jujuy, Salta, Tucumán, and Catamarca (22–28°S) (31, 32, 33, 34, 35, 36, 37).

Historical Changes to the Distribution

Information needed.

Distribution of the Black-and-chestnut Eagle - Range Map
  • Year-round
  • Migration
  • Breeding
  • Non-Breeding
Distribution of the Black-and-chestnut Eagle

Recommended Citation

Rivas-Fuenzalida, T., J. M. Grande, S. Kohn, F. H. Vargas, and S. Zuluaga Castañeda (2022). Black-and-chestnut Eagle (Spizaetus isidori), version 2.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.baceag2.02