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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 Vicente López

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: 589629
  Adult

Vicente López
Buenos Aires
Argentina
06/29/2024
Virginia Bonifacio
Foto
Photography ID: 545351
  Adult

Vicente López
Buenos Aires
Argentina
08/08/2023
Fernando Naifleisch
Foto
Photography ID: 537382
  Juvenile

Vicente López
Buenos Aires
Argentina
10/23/2022
Pablo Marcelo Meyer
Foto
Photography ID: 496391
  Juvenile

Vicente López
Buenos Aires
Argentina
06/13/2022
Gabriel Carbajales
Foto
Photography ID: 495462
  Immature

Vicente López
Buenos Aires
Argentina
06/01/2022
Gabriel Carbajales
Foto
Photography ID: 458332
  Juvenile

Vicente López
Buenos Aires
Argentina
07/31/2021
Matias Petroccello
Foto
Photography ID: 395959
  Adult

Vicente López
Buenos Aires
Argentina
04/26/2020
Lisandro Redondo
Foto
Photography ID: 379050
  Immature

Vicente López
Buenos Aires
Argentina
09/02/2019
Guillermo C Olivero
Foto
Photography ID: 369496
  Juvenile

Vicente López
Buenos Aires
Argentina
08/10/2019
Guillermo C Olivero
Foto
Photography ID: 336828
  Adult

Vicente López
Buenos Aires
Argentina
04/27/2019
Gabriel Dalinger
Foto
Photography ID: 205674
  Adult

Vicente López
Buenos Aires
Argentina
06/03/2017
Sebastián Otero
Foto
Photography ID: 145392
  Adult

Vicente López
Buenos Aires
Argentina
03/16/2016
Roberto Battaglia



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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
242381024/01/2026ArgentinaBuenos AiresVicente LópezAlec Earnshaw
235162227/08/2025ArgentinaBuenos AiresÁrea Natural Yrigoyen (Yrigoyen y el Río), Vicente López1Gabriel Carbajales
236029124/08/2025ArgentinaBuenos AiresReserva Ecológica de Vicente López, Vicente López1Julian Uriel Collado
232087408/07/2025ArgentinaBuenos AiresÁrea Natural Yrigoyen (Yrigoyen y el Río), Vicente López1Gabriel Carbajales
230066104/06/2025ArgentinaBuenos AiresArroyo Güemes, Vicente López2Gabriel Carbajales
230036024/05/2025ArgentinaBuenos AiresLa Lucila, Vicente López1Gabriel Carbajales
230032722/05/2025ArgentinaBuenos AiresÁrea Natural Yrigoyen (Yrigoyen y el Río), Vicente López1Gabriel Carbajales
228002019/03/2025ArgentinaBuenos AiresReserva Natural Yrigoyen (yrigoyen y el Río), Vicente López1Diego Oscar
224442129/01/2025ArgentinaBuenos AiresÁrea Natural Yrigoyen (Yrigoyen y el Río), Vicente LópezDiego Oscar
215375914/09/2024ArgentinaBuenos AiresÁrea Natural Yrigoyen (Yrigoyen y el Río), Vicente López3Gabriel Carbajales
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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