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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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Records from Villa Ventana

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: 442075
  Adult

Villa Ventana
Buenos Aires
Argentina
02/03/2021
Daniel Osvaldo Fernández
Foto
Photography ID: 317971
  Adult

Villa Ventana
Buenos Aires
Argentina
01/31/2019
Guillermo C Olivero
Foto
Photography ID: 273682
  Adult

Villa Ventana
Buenos Aires
Argentina
01/14/2018
Guillermo C Olivero
Foto
Photography ID: 96471
  Adult

Villa Ventana
Buenos Aires
Argentina
05/01/2015
Santiago Juan Torres



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 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
177073027/05/2023ArgentinaBuenos Airesruta 76 altura complejo el pinar, Villa Ventana2Javier A. Origlia
139607803/02/2021ArgentinaBuenos AiresVilla Ventana, Villa VentanaDaniel Osvaldo Fernández
88916231/01/2019ArgentinaBuenos AiresAntena desde Las Piedras y Zorzal., Villa VentanaGuillermo C Olivero
77451214/01/2018ArgentinaBuenos AiresCerca del Arroyo Belisario., Villa VentanaGuillermo C Olivero
27662601/05/2015ArgentinaBuenos AiresVilla VentanaSantiago Juan Torres
16159720/07/2014ArgentinaBuenos AiresVilla VentanaPablo Brudnick
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 17/03/2026.