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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 Guatraché

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: 583717
  Adult

Guatraché
La Pampa
Argentina
05/10/2024
Hugo Alberto Valderrey
Foto
Photography ID: 257376
  Juvenile

Guatraché
La Pampa
Argentina
03/24/2018
Ramón Alberto Sosa
Foto
Photography ID: 257072
  Juvenile

Guatraché
La Pampa
Argentina
03/24/2018
Marcelo Fabio Dolsan
Foto
Photography ID: 169167
  Immature

Guatraché
La Pampa
Argentina
09/18/2016
Federico Burgos Bauer
Foto
Photography ID: 157191
  Adult

Guatraché
La Pampa
Argentina
06/19/2016
Manuela Juliana Vargas
Foto
Photography ID: 152413
  Adult

Guatraché
La Pampa
Argentina
06/04/2016
Lucas Nikolaus
Foto
Photography ID: 146498
  Adult

Guatraché
La Pampa
Argentina
04/11/2016
Nelida Sara Cornejo
Foto
Photography ID: 34698
  Juvenile

Guatraché
La Pampa
Argentina
09/01/2011
María Beatriz Grasso



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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
203338110/05/2024ArgentinaLa PampaRuta 1 entre Guatrache y Gral Campos, GuatrachéHugo Alberto Valderrey
72168524/03/2018ArgentinaLa PampaReserva Natural Laguna Guatraché, GuatrachéRamón Alberto Sosa
72281624/03/2018ArgentinaLa PampaReserva Natural Laguna Guatraché, GuatrachéMarcelo Fabio Dolsan
48236718/09/2016ArgentinaLa PampaGuatrachéFederico Burgos Bauer
45236319/06/2016ArgentinaLa PampaReserva Natural Laguna Guatraché, GuatrachéManuela Juliana Vargas
44052004/06/2016ArgentinaLa PampaCamino a Laguna Guatraché, GuatrachéLucas Nikolaus
42439711/04/2016ArgentinaLa PampaGuatrachéNelida Sara Cornejo
14244520/09/2013ArgentinaLa PampaGuatrachéGonzalo Diaz
9948201/09/2011ArgentinaLa PampaGuatrachéMaría Beatriz Grasso
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 16/03/2026.