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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: 516196
♂ ♀
  Adult

Ruta 11 entre Formosa y Guaycolec
Formosa
Argentina
07/09/2022
Andrés Cecconi
Foto
Photography ID: 516008
  Adult

Estancia Laguna Verde
Santa Cruz
Argentina
01/27/2022
Andrés Cecconi
Foto
Photography ID: 455493
  Immature

Papagayos
San Luis
Argentina
07/12/2021
Andrés Cecconi
Foto
Photography ID: 455458
♂ ♀
  Adult

Villa de Merlo
San Luis
Argentina
07/10/2021
Andrés Cecconi
Foto
Photography ID: 440826
  Juvenile

Tapso
Santiago del Estero
Argentina
04/01/2021
Andrés Cecconi
Foto
Photography ID: 440820
  Juvenile

Frias
Santiago del Estero
Argentina
04/01/2021
Andrés Cecconi
Foto
Photography ID: 433585
  Adult

La Cumbrecita
Córdoba
Argentina
01/02/2021
Andrés Cecconi
Foto
Photography ID: 416516
  Juvenile

San mariano
Santa Fe
Argentina
10/07/2020
Andrés Cecconi
Foto
Photography ID: 383415
  Juvenile

Fiambálá
Catamarca
Argentina
02/15/2020
Andrés Cecconi
Foto
Photography ID: 363635
  Adult

Colonia Mascías
Santa Fe
Argentina
11/18/2019
Andrés Cecconi



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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
168123109/07/2022ArgentinaFormosaRuta 11 entre Formosa y GuaycolecAndrés Cecconi
168101827/01/2022ArgentinaSanta CruzEstancia Laguna VerdeAndrés Cecconi
168072312/01/2022ArgentinaBuenos AiresParque Provincial Ernesto TornquistAndrés Cecconi
143923812/07/2021ArgentinaSan LuisPapagayosAndrés Cecconi
143918510/07/2021ArgentinaSan LuisFilo serrano, Villa de MerloAndrés Cecconi
139368101/04/2021ArgentinaSantiago del EsteroTapsoAndrés Cecconi
139367501/04/2021ArgentinaSantiago del EsteroFriasAndrés Cecconi
136947524/01/2021ArgentinaJujuyParque Provincial Potrero de YalaAndrés Cecconi
136931802/01/2021ArgentinaCórdobaLa CumbrecitaAndrés Cecconi
130413307/10/2020ArgentinaSanta FeSan marianoAndrés Cecconi
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 22/03/2026.