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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 Reserva Provincial Los Sosa

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: 332403
  Adult

Reserva Provincial Los Sosa
Tucumán
Argentina
05/12/2019
Diego Carus



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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
180637001/07/2023ArgentinaTucumánMirador Rio Los Sosa, Reserva Provincial Los SosaGonzalo Camiletti
178242914/06/2023ArgentinaTucumánVirgen de las flores, Reserva Provincial Los SosaDiego Carus
178224714/06/2023ArgentinaTucumánVirgen de las flores, Reserva Provincial Los SosaMaria Belén Dri
116274403/01/2020ArgentinaTucumánReserva Provincial Los SosaMaria Belén Dri
116156303/01/2020ArgentinaTucumánReserva Provincial Los SosaDiego Carus
92353612/05/2019ArgentinaTucumánReserva Provincial Los SosaMaria Belén Dri
92320912/05/2019ArgentinaTucumánReserva Provincial Los SosaDiego Carus
89077110/01/2019ArgentinaTucumánReserva Provincial Los SosaMarcos Augusto Lartigau
46790217/08/2016ArgentinaTucumánReserva Provincial Los SosaCarlos Schmidt
7412025/09/2013ArgentinaTucumánReserva Provincial Los SosaPablo Meoniz
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.