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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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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





Geographic distribution


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Species photographs

Last published photographs

Foto
Photography ID: 690020
 
Camino sin nombrar
Buenos Aires
Argentina
03/01/2026
Susana Gomez
Foto
Photography ID: 639282
  Adult

Punta Indio
Buenos Aires
Argentina
06/13/2025
Susana Gomez
Foto
Photography ID: 626357
  Adult

Comodoro Rivadavia
Chubut
Argentina
03/02/2025
Susana Gomez
Foto
Photography ID: 536340
  Immature

Lobería
Buenos Aires
Argentina
05/28/2023
Susana Gomez
Foto
Photography ID: 503807
  Adult

Lobería
Buenos Aires
Argentina
08/14/2022
Susana Gomez
Foto
Photography ID: 491640
  Juvenile

Lobería
Buenos Aires
Argentina
04/21/2022
Susana Gomez
Foto
Photography ID: 491638
  Juvenile

Lobería
Buenos Aires
Argentina
04/21/2022
Susana Gomez
Foto
Photography ID: 489439
  Juvenile

Lobería
Buenos Aires
Argentina
04/10/2022
Susana Gomez
Foto
Photography ID: 488260
  Juvenile

Lobería
Buenos Aires
Argentina
04/03/2022
Susana Gomez
Foto
Photography ID: 486308
  Juvenile

Lobería
Buenos Aires
Argentina
03/20/2022
Susana Gomez
Foto
Photography ID: 437110
  Adult

Lobería
Buenos Aires
Argentina
03/14/2021
Susana Gomez
Foto
Photography ID: 402311
  Adult

Lobería
Buenos Aires
Argentina
06/28/2020
Susana Gomez



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Species reports



 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
244085101/03/202610:07ArgentinaBuenos AiresCamino sin nombrarSusana Gomez
236358014/09/2025ArgentinaBuenos AiresArroyo Vitel, cerca del puente, Chascomús1Susana Gomez
236349314/09/2025ArgentinaBuenos AiresCava del castillo, muy cerca laguna Chascomús, Chascomús1Susana Gomez
230532413/06/2025ArgentinaBuenos AiresPunta IndioSusana Gomez
229713007/06/202513:12ArgentinaBuenos AiresVía Sin NombreSusana Gomez
226228402/03/2025ArgentinaChubutComodoro RivadaviaSusana Gomez
178398525/06/2023ArgentinaBuenos AiresPlayas de Arenas Verdes, Lobería1Susana Gomez
177135228/05/2023ArgentinaBuenos AiresCorredor Biológico Camino de los Curros, Lobería1Susana Gomez
176580313/05/2023ArgentinaBuenos AiresBahía Blanca1Susana Gomez
176392413/05/2023ArgentinaBuenos AiresRuta Nacional 35Susana Gomez
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 26/09/2026.