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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 Buenos Aires

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: 675024
  Adult

Tandil
Buenos Aires
Argentina
01/16/2026
Liliana Rubilar Puerta
Foto
Photography ID: 663579
  Adult

Sierra de la Ventana
Buenos Aires
Argentina
07/23/2025
Fernando Naifleisch
Foto
Photography ID: 663564
  Adult

Sierra de la Ventana
Buenos Aires
Argentina
10/25/2025
Sergio Cusano
Foto
Photography ID: 658889
  Adult

Sierra de la Ventana
Buenos Aires
Argentina
10/25/2025
Eduardo Cusano
Foto
Photography ID: 652106
  Immature

Mar del Plata
Buenos Aires
Argentina
09/12/2025
Regina Gerbaldo
Foto
Photography ID: 644894
  Adult

Pigüé
Buenos Aires
Argentina
07/25/2025
Tiago Vaggi
Foto
Photography ID: 642450
  Adult

Sierra de la Ventana
Buenos Aires
Argentina
09/13/2024
Fernando Rasmussen
Foto
Photography ID: 621351
  Juvenile

Tandil
Buenos Aires
Argentina
02/05/2025
Filippo Riffaldi
Foto
Photography ID: 620601
  Immature

San Manuel
Buenos Aires
Argentina
01/29/2025
Edgar Romeo
Foto
Photography ID: 619753
  Adult

Azul
Buenos Aires
Argentina
01/22/2025
Liliana Rubilar Puerta



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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
245120622/03/2026ArgentinaBuenos AiresCamino de acceso Laguna de Saavedra1Luis Cesar Tejo
245098122/03/2026ArgentinaBuenos AiresCamino de acceso Laguna de Saavedra1Daniela Espinosa
244972522/03/2026ArgentinaBuenos AiresCamino de acceso Laguna de Saavedra1Diego Oscar
245008420/03/202609:11ArgentinaBuenos AiresRuta Provincial 74 274, Buenos Aires1Santiago Juan Torres
243737822/02/202609:48ArgentinaBuenos AiresTandil1Santiago Juan Torres
242439828/01/2026ArgentinaBuenos AiresRuta Prov. 74 km 235, Tandil1Liliana Rubilar Puerta
241706316/01/2026ArgentinaBuenos AiresCamino rural Gardey, Tandil2Liliana Rubilar Puerta
240098325/10/2025ArgentinaBuenos AiresRuta 76 antes del desvío a la ciudad, Sierra de la VentanaSergio Cusano
238255125/10/2025ArgentinaBuenos AiresRuta 76 antes del desvío a la ciudad, Sierra de la VentanaEduardo Cusano
238037325/10/202509:47ArgentinaBuenos AiresRuta Provincial 761Eduardo 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 12/04/2026.