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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 El Calafate

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: 632189
  Juvenile

El Calafate
Santa Cruz
Argentina
04/04/2025
José Raúl Fernández
Foto
Photography ID: 511999
  Adult

El Calafate
Santa Cruz
Argentina
10/21/2022
Hugo Alberto Valderrey
Foto
Photography ID: 430514
  Juvenile

El Calafate
Santa Cruz
Argentina
01/17/2021
Natalia Pelossi
Foto
Photography ID: 396741
  Adult

El Calafate
Santa Cruz
Argentina
09/28/2015
Enrique Sanz
Foto
Photography ID: 359028
♂ ♀
  Adult

El Calafate
Santa Cruz
Argentina
10/08/2019
Zulima América Schupbach
Foto
Photography ID: 358137
♂ ♀
  Adult

El Calafate
Santa Cruz
Argentina
10/08/2019
Zulima América Schupbach
Foto
Photography ID: 357905
♂ ♀
  Adult

El Calafate
Santa Cruz
Argentina
10/08/2019
Zulima América Schupbach
Foto
Photography ID: 357904
♂ ♀
  Adult

El Calafate
Santa Cruz
Argentina
10/08/2019
Zulima América Schupbach
Foto
Photography ID: 293855
  Juvenile

El Calafate
Santa Cruz
Argentina
10/09/2018
Zulima América Schupbach
Foto
Photography ID: 264527
  Juvenile

El Calafate
Santa Cruz
Argentina
03/12/2018
José Raúl Fernández
Foto
Photography ID: 199059
  Immature

El Calafate
Santa Cruz
Argentina
02/21/2017
Manuel Godoy
Foto
Photography ID: 181495
  Adult

El Calafate
Santa Cruz
Argentina
09/08/2014
Zulima América Schupbach



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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
243831928/12/2025ArgentinaSanta CruzEl CalafateHernán Tolosa
238632303/11/2025ArgentinaSanta CruzCerro Comision, El Calafate2Diego Oscar
228039304/04/2025ArgentinaSanta CruzCamino a Lago Roca, El CalafateJosé Raúl Fernández
166374821/10/2022ArgentinaSanta CruzEl CalafateHugo Alberto Valderrey
135421517/01/2021ArgentinaSanta CruzCuevas del Gualicho, El CalafateNatalia Pelossi
111729108/10/2019ArgentinaSanta CruzRuta 60, El CalafateZulima América Schupbach
82908626/10/2018ArgentinaSanta CruzEl Calafate5Nicolas Olejnik
82512409/10/2018ArgentinaSanta CruzParque Provincial Península de Magallanes, El CalafateZulima América Schupbach
75548112/03/2018ArgentinaSanta CruzLago Roca, El CalafateJosé Raúl Fernández
56596121/02/2017ArgentinaSanta CruzCamino a Lago Roca, El CalafateManuel Godoy
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 19/03/2026.