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Parabuteo unicinctus

Harris´s Hawk


Parabuteo unicinctus

(Temminck, CJ, 1824)
Gavilán Mixto
Gavião-asa-de-telha

Family: Accipitridae
Order: Accipitriformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Synonyms: Falco unicinctus.

Subspecies:





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Records from Ramos Mejía

Conservation status according to BirdLife International: Least Concern


Description


A medium-to-large raptor with an elegant outline, easily recognized by the contrast between its dark brown body, rich rufous wing coverts, and paler legs and tail base. A prominent white tail band is visible both perched and in flight. Its robust head, hooked bluish-gray bill and long yellowish tarsi lend it a powerful and agile appearance, well suited for maneuvering through shrubs and open spaces.

Geographical distribution: Ranges widely across the Americas, from the southwestern United States and Mexico through Central America and extensive areas of South America, including Brazil, Bolivia, Paraguay, Uruguay, Chile, and Argentina. It is most common in arid and semiarid regions with low vegetation, where small prey and elevated perches are readily available.

Habitat: Occupies open or semi-open environments such as scrublands, savannas, dry forests, arid zones, grasslands, and rural landscapes with scattered trees. It tolerates modified habitats when they provide open spaces for hunting and natural or artificial structures for perching.

Diet: Predominantly consumes small mammals, small birds, reptiles and occasionally large insects. A versatile hunter, it combines low flights, short pursuits and ambushes from elevated perches. One of its most distinctive traits is the ability to engage in cooperative hunting, where coordinated group strategies greatly increase capture success.

Behavior: Notably social for a raptor, forming family groups that may include several individuals assisting in territory defense, hunting and raising the young. Its flight is broad and controlled, alternating glides with strong wingbeats. Frequent use of fence posts, branches and other elevated points reflects its constant vigilance behavior.

Breeding: Builds nests in medium to tall trees, on columnar cacti or occasionally on human-made structures. Nests consist of sturdy branches forming a platform reused over multiple seasons. Typical clutches contain two to four eggs, mostly incubated by the female. Juveniles remain with the group for an extended period, learning cooperative hunting before dispersing.

Conservation status: Listed as Least Concern, with stable populations throughout most of its range. Its cooperative behavior and adaptability to open habitats favor its persistence, though localized threats include habitat degradation and persecution.


Author of this compilation: EcoRegistros – 08/12/2025





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Species photographs

Last published photographs

Foto
Photography ID: 669845
  Adult

Ramos Mejía
Buenos Aires
Argentina
01/17/2026
Sergio Cusano
Foto
Photography ID: 669844
  Adult

Ramos Mejía
Buenos Aires
Argentina
01/17/2026
Sergio Cusano
Foto
Photography ID: 669843
  Adult

Ramos Mejía
Buenos Aires
Argentina
01/17/2026
Sergio Cusano
Foto
Photography ID: 490515
  Immature

Ramos Mejía
Buenos Aires
Argentina
03/04/2022
Sergio Cusano
Foto
Photography ID: 484439
  Juvenile

Ramos Mejía
Buenos Aires
Argentina
02/18/2022
Sergio Cusano
Foto
Photography ID: 395958
  Juvenile

Ramos Mejía
Buenos Aires
Argentina
04/26/2020
Dolores Fernandez
Foto
Photography ID: 394376
  Juvenile

Ramos Mejía
Buenos Aires
Argentina
04/08/2020
Dolores Fernandez
Foto
Photography ID: 394375
  Juvenile

Ramos Mejía
Buenos Aires
Argentina
04/08/2020
Dolores Fernandez
Foto
Photography ID: 205647
  Immature

Ramos Mejía
Buenos Aires
Argentina
06/11/2017
Eduardo Cusano
Foto
Photography ID: 74926
  Juvenile

Ramos Mejía
Buenos Aires
Argentina
01/01/2015
Dolores Fernandez
Foto
Photography ID: 6278
  Adult

Ramos Mejía
Buenos Aires
Argentina
10/16/2010
Nicolas Olejnik
Foto
Photography ID: 4397
  Juvenile

Ramos Mejía
Buenos Aires
Argentina
07/23/2010
Nicolas Olejnik



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 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
251284820/08/202611:11ArgentinaBuenos AiresAlsina 797, Ramos Mejía2Eduardo Cusano
250871813/08/202610:40ArgentinaBuenos AiresPedro Bonifacio Palacios 333, Ramos Mejía1Eduardo Cusano
249499816/07/202617:53ArgentinaBuenos AiresAvenida de Mayo 54, Ramos Mejía4Eduardo Cusano
248170810/06/202621:15ArgentinaBuenos AiresGeneral Soler 25, Ramos Mejía1Eduardo Cusano
248153808/06/202617:36ArgentinaBuenos AiresLeandro N. Alem 400, Ramos Mejía2Eduardo Cusano
247814201/06/202617:05ArgentinaBuenos AiresLeandro N. Alem 400, Ramos Mejía1Eduardo Cusano
247421625/05/202615:51ArgentinaBuenos AiresBelgrano 490, Ramos Mejía3Eduardo Cusano
246990814/05/202616:39ArgentinaBuenos AiresBelgrano 594, Ramos Mejía2Eduardo Cusano
245926716/04/202611:13ArgentinaBuenos AiresNecochea 17, Ramos Mejía1Nicolas Olejnik
245916915/04/202614:37ArgentinaBuenos AiresAvenida Rivadavia 14798, Ramos Mejía2Eduardo Cusano
Page 1

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) – Species account. Accessed from www.ecoregistros.org on 14/09/2026.