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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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Records from Luján

Conservation Status according to BirdLife International: Least Concern

Synonyms: Falco unicinctus.

Subspecies:


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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Last published photographs

Foto
Photography ID: 652674
  Immature

Luján
Buenos Aires
Argentina
09/20/2025
Silvia Sokolovsky
Foto
Photography ID: 622797
  Adult

Luján
Buenos Aires
Argentina
02/20/2025
Silvia Sokolovsky
Foto
Photography ID: 585901
♂ ♀
  Adult

Luján
Buenos Aires
Argentina
06/01/2024
Silvia Sokolovsky
Foto
Photography ID: 545931
  Immature

Luján
Buenos Aires
Argentina
08/26/2023
Silvia Sokolovsky
Foto
Photography ID: 499173
  Adult

Luján
Buenos Aires
Argentina
07/05/2022
Silvia Sokolovsky
Foto
Photography ID: 482559
  Immature

Luján
Buenos Aires
Argentina
02/16/2022
Silvia Sokolovsky
Foto
Photography ID: 478128
  Juvenile

Luján
Buenos Aires
Argentina
01/06/2022
Silvia Sokolovsky
Foto
Photography ID: 463315
  Juvenile

Luján
Buenos Aires
Argentina
09/25/2021
Silvia Sokolovsky
Foto
Photography ID: 463314
♂ ♀
  Adult

Luján
Buenos Aires
Argentina
09/25/2021
Silvia Sokolovsky
Foto
Photography ID: 403281
  Adult

Luján
Buenos Aires
Argentina
07/04/2020
Silvia Sokolovsky
Foto
Photography ID: 402213
  Adult

Luján
Buenos Aires
Argentina
06/28/2020
Silvia Sokolovsky
Foto
Photography ID: 398334
  Adult

Luján
Buenos Aires
Argentina
05/17/2020
Ricardo Juliano



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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
236338620/09/2025ArgentinaBuenos AiresLujánSilvia Sokolovsky
224930220/02/2025ArgentinaBuenos AiresLujánSilvia Sokolovsky
203948801/06/2024ArgentinaBuenos AiresLujánSilvia Sokolovsky
181520326/08/2023ArgentinaBuenos AiresPlaza Colón, LujánSilvia Sokolovsky
170196214/01/2023ArgentinaBuenos AiresRuta Provincial 6, Luján1Jorge La Grotteria
170172614/01/2023ArgentinaBuenos AiresRuta Provincial 6, Luján1María Alejandra Sosa
160585205/07/2022ArgentinaBuenos AiresLujánSilvia Sokolovsky
154757216/02/2022ArgentinaBuenos AiresPlaza Colón, LujánSilvia Sokolovsky
152803006/01/2022ArgentinaBuenos AiresLujánSilvia Sokolovsky
146683925/09/2021ArgentinaBuenos AiresBarrio Valle Verde, LujánSilvia Sokolovsky
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 09/03/2026.










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