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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 San Martin de los Andes

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: 210651
  Adult

San Martin de los Andes
Neuquén
Argentina
11/25/2012
Rodolfo Capdevielle
Foto
Photography ID: 57143
  Adult

San Martin de los Andes
Neuquén
Argentina
07/26/2014
Eduardo Cusano
Foto
Photography ID: 57115
  Adult

San Martin de los Andes
Neuquén
Argentina
07/25/2014
Eduardo Cusano
Foto
Photography ID: 57044
  Adult

San Martin de los Andes
Neuquén
Argentina
07/26/2014
Sergio Cusano
Foto
Photography ID: 56897
  Adult

San Martin de los Andes
Neuquén
Argentina
07/25/2014
Sergio Cusano
Foto
Photography ID: 33903
  Adult

San Martin de los Andes
Neuquén
Argentina
01/12/2014
Sergio Cusano



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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
152916305/12/2021ArgentinaNeuquénSan Martin de los Andes, San Martin de los Andes1Guillermo Marcaida
152757405/12/2021ArgentinaNeuquénSan Martin de los Andes, San Martin de los Andes1Elsa Longo
50379817/11/2016ArgentinaNeuquénLaguna Rosales, San Martin de los AndesMarcelo Gavensky
16206126/07/2014ArgentinaNeuquénLa Vega, San Martin de los AndesEduardo Cusano
16194626/07/2014ArgentinaNeuquénSan Martin de los AndesSergio Cusano
16201625/07/2014ArgentinaNeuquénRuta 40 y Arroyo Chapelco Grande, San Martin de los AndesEduardo Cusano
16169525/07/2014ArgentinaNeuquénSan Martin de los AndesSergio Cusano
9656912/01/2014ArgentinaNeuquénSan Martin de los AndesSergio Cusano
59235025/11/2012ArgentinaNeuquénCollon Cura por la 234, San Martin de los AndesRodolfo Capdevielle
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.