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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 Río Negro

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: 690027
  Juvenile

Ruta Provincial 23
Río Negro
Argentina
01/18/2022
Aluminé Sangorrín
Foto
Photography ID: 673890
  Adult

Cipolletti
Río Negro
Argentina
02/13/2026
Fernanda Ferrari
Foto
Photography ID: 580783
  Adult

General Roca
Río Negro
Argentina
04/18/2024
Julián Tocce
Foto
Photography ID: 578108
  Juvenile

Balneario El Cóndor
Río Negro
Argentina
03/09/2024
Carlos De Biagi
Foto
Photography ID: 496933
  Immature

La Buitrera
Río Negro
Argentina
06/14/2022
Juan Manuel Canepa
Foto
Photography ID: 409969
♂ ♀
  Adult

Balneario El Cóndor
Río Negro
Argentina
08/05/2016
Jose Luis Vera
Foto
Photography ID: 381397
  Juvenile

General Roca
Río Negro
Argentina
02/10/2020
Julián Tocce
Foto
Photography ID: 328362
  Adult

Valle Azul
Río Negro
Argentina
04/20/2019
Edgardo J Fernandez
Foto
Photography ID: 245159
  Adult

General Roca
Río Negro
Argentina
02/04/2018
Alicia Miller
Foto
Photography ID: 245121
  Adult

General Roca
Río Negro
Argentina
02/04/2018
Julián Tocce
Foto
Photography ID: 242820
  Juvenile

Villa Regina
Río Negro
Argentina
01/24/2018
Edgardo J Fernandez
Foto
Photography ID: 200095
  Fledgling

Coronel Juan José Gomez
Río Negro
Argentina
04/24/2017
Julián Tocce



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Species vocalizations

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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
243597713/02/2026ArgentinaRío NegroMaestro don juan espinosa 3443 la falda, CipollettiFernanda Ferrari
210178907/07/2024ArgentinaRío NegroRuta Nacional 1511Mariano Costa
202369618/04/2024ArgentinaRío NegroPuente sobre brazo del Río negro en la ruta 6, General RocaJulián Tocce
201651909/03/2024ArgentinaRío NegroEl Pescadero, Balneario El CóndorCarlos De Biagi
201369106/03/2024ArgentinaRío NegroÁrea Natural Protegida Reserva Faunística Punta Bermeja1Carlos De Biagi
206844817/02/2024ArgentinaRío NegroEntre La Española y el Rio Negro, General Roca1Ralph Roberts
197028610/02/2024ArgentinaRío NegroPaso Córdova, General Roca, General Roca1Julián Tocce
192763729/11/2023ArgentinaRío NegroCerro Banderita, Las Grutas1Diego Oscar
198002611/11/2023ArgentinaRío NegroGeneral RocaJorgelina Lopez
191332411/11/2023ArgentinaRío NegroGeneral RocaHernán Tolosa
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 23/09/2026.