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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 La Plata

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: 649112
  Immature

La Plata
Buenos Aires
Argentina
08/26/2025
María Alejandra Sosa
Foto
Photography ID: 649111
  Immature

La Plata
Buenos Aires
Argentina
08/26/2025
María Alejandra Sosa
Foto
Photography ID: 610363
  Juvenile

La Plata
Buenos Aires
Argentina
11/21/2024
Diego Varales
Foto
Photography ID: 584703
  Adult

La Plata
Buenos Aires
Argentina
05/20/2024
Diego Varales
Foto
Photography ID: 529553
  Juvenile

La Plata
Buenos Aires
Argentina
03/27/2023
Mario Hernán Spicoli
Foto
Photography ID: 419382
  Adult

La Plata
Buenos Aires
Argentina
05/04/2020
María Alejandra Sosa
Foto
Photography ID: 172098
  Juvenile

La Plata
Buenos Aires
Argentina
10/22/2016
Gustavo Adolfo Herrera
Foto
Photography ID: 145531
  Adult

La Plata
Buenos Aires
Argentina
03/30/2016
Eduardo Haene
Foto
Photography ID: 71906
  Immature

La Plata
Buenos Aires
Argentina
07/22/2012
Pablo Rivero
Foto
Photography ID: 10918
  Juvenile

La Plata
Buenos Aires
Argentina
04/28/2010
Nicolas Chimento



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Last Vocalizations published



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
María Alejandra Sosa12/03/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AAdultYesNo
María Alejandra Sosa12/01/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AN/ANoNo
María Alejandra Sosa12/01/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AN/ANoNo
María Alejandra Sosa12/01/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AN/ANoNo
María Alejandra Sosa08/30/2021ArgentinaBuenos AiresAvenida 60 440La PlataN/AN/AYesNo



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 Reports


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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
244433907/02/2026ArgentinaBuenos AiresPlaza Malvinas Argentinas, La Plata1Julian Uriel Collado
241278606/01/2026ArgentinaBuenos AiresLa Plata centro, La Plata2Diego Varales
240478327/12/2025ArgentinaBuenos AiresPaseo del Bosque, La Plata1Pablo Richter
239609303/12/202509:29ArgentinaBuenos AiresPaseo del Bosque, La Plata1María Alejandra Sosa
239567901/12/202514:24ArgentinaBuenos AiresPaseo del Bosque, La Plata2María Alejandra Sosa
235930116/09/202517:30ArgentinaBuenos AiresPaseo del Bosque, La Plata1María Alejandra Sosa
234856726/08/2025ArgentinaBuenos AiresLa PlataMaría Alejandra Sosa
232649825/07/2025ArgentinaBuenos AiresAvenida 60 416, La Plata2Jorge La Grotteria
229465202/06/202511:42ArgentinaBuenos AiresLa Plata3María Alejandra Sosa
228756213/05/202513:55ArgentinaBuenos AiresPaseo del Bosque, La Plata1María Alejandra Sosa
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 14/03/2026.