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Black-chested Buzzard-Eagle

Geranoaetus melanoleucus
(Vieillot, LJP, 1819)
Águila Mora
Águia-chilena

Family: Accipitridae
Order: Accipitriformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Conservation status according to BirdLife International: Least Concern

Synonyms: Spizaetus melanoleucus.

Subspecies:


Description: It is a large raptor with a robust build and powerful silhouette, featuring broad wings and a relatively short tail. Adult plumage shows a strong contrast between the dark upperparts and pale underparts, with whitish breast and belly finely barred. The head is dark gray, the bill strong and hooked, and the legs long and muscular, well adapted for capturing sizeable prey.

Geographic distribution: It is widely distributed across South America, ranging from southern Colombia and Peru to southernmost Argentina and Chile. In Argentina, it occurs throughout much of the country, from Andean regions to Patagonian plains, demonstrating remarkable ecological flexibility.

Habitat: It occupies a wide variety of open environments, including steppes, grasslands, mountainous areas, plateaus, and semi-arid regions. The species favors landscapes with broad visibility, allowing efficient use of thermal currents and long-distance prey detection.

Feeding: Its diet is carnivorous and diverse, consisting mainly of small to medium-sized mammals, such as rodents and hares, as well as birds, reptiles, and occasionally carrion. It is an efficient predator, capable of hunting both from low flight and elevated perches.

Behavior: The species is generally solitary or found in pairs, performing wide soaring flights that rely heavily on thermals. It becomes territorial during the breeding season and is often seen perched on rocks, poles, or natural elevations, scanning the surroundings.

Nesting: Breeding occurs mainly in spring. It builds large nests, often reused for several years, placed on rocky ledges, cliffs, or tall trees. The clutch usually includes one to two eggs, incubated by both adults, followed by an extended period of parental care.

Conservation status: It is classified as a species of Least Concern, with relatively stable populations throughout most of its range. However, local threats include human persecution, prey depletion, and habitat alteration.


Author of this compilation: EcoRegistros – 16/12/2025





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Last published photographs

Foto
Photography ID: 658889
  Adult

Sierra de la Ventana
Buenos Aires
Argentina
10/25/2025
Eduardo Cusano
Foto
Photography ID: 655988
  Juvenile

Ruta 34 entre Sunchales y Lehmann
Santa Fe
Argentina
09/14/2025
Eduardo Cusano
Foto
Photography ID: 573571
  Adult

Los Molles
Mendoza
Argentina
02/21/2024
Eduardo Cusano
Foto
Photography ID: 556852
  Juvenile

Villa de María de Río Seco
Córdoba
Argentina
11/04/2023
Eduardo Cusano
Foto
Photography ID: 554801
  Juvenile

Rapelli
Santiago del Estero
Argentina
10/25/2023
Eduardo Cusano
Foto
Photography ID: 513233
  Juvenile

Reserva Natural Punta Rasa
Buenos Aires
Argentina
10/27/2022
Eduardo Cusano
Foto
Photography ID: 495017
  Adult

Valle del Rio Collon Cura
Neuquén
Argentina
05/15/2022
Eduardo Cusano
Foto
Photography ID: 494696
  Adult

Junin de los Andes
Neuquén
Argentina
05/11/2022
Eduardo Cusano
Foto
Photography ID: 489294
  Adult

Villa de Merlo
San Luis
Argentina
03/27/2022
Eduardo Cusano
Foto
Photography ID: 489292
  Adult

Villa de Merlo
San Luis
Argentina
03/27/2022
Eduardo Cusano
Foto
Photography ID: 488527
  Adult

Ruta Nacional 20
San Luis
Argentina
03/19/2022
Eduardo Cusano



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 Reports


 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
238255125/10/2025ArgentinaBuenos AiresRuta 76 antes del desvío a la ciudad, Sierra de la VentanaEduardo Cusano
238037325/10/202509:47ArgentinaBuenos AiresRuta Provincial 761Eduardo Cusano
236851427/09/202512:22ArgentinaSaltaRuta Nacional 91Eduardo Cusano
236850127/09/202510:57ArgentinaSaltaRuta Nacional 91Eduardo Cusano
237227314/09/2025ArgentinaSanta FeRuta 34 entre Sunchales y LehmannEduardo Cusano
200520121/02/2024ArgentinaMendozaLos MollesEduardo Cusano
191491504/11/2023ArgentinaCórdobaVilla de María de Río SecoEduardo Cusano
190731925/10/2023ArgentinaSantiago del EsteroRapelliEduardo Cusano
166901327/10/2022ArgentinaBuenos AiresCamino a Punta Rasa, Reserva Natural Punta RasaEduardo Cusano
158739315/05/2022ArgentinaNeuquénValle del Rio Collon CuraEduardo Cusano
Page 1

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Citation recommended:

EcoRegistros. 2026. Black-chested Buzzard-Eagle (Geranoaetus melanoleucus) - Species sheet. Acceded from https://www.ecoregistros.org on 18/04/2026.