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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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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: 484170
  Immature

Primeros Pinos
Neuquén
Argentina
02/06/2022
Gustavo Daniel González
Foto
Photography ID: 479508
  Adult

Avellaneda
Buenos Aires
Argentina
01/15/2022
Gustavo Daniel González
Foto
Photography ID: 453675
  Adult

Avellaneda
Buenos Aires
Argentina
07/03/2021
Gustavo Daniel González
Foto
Photography ID: 439163
  Juvenile

Punta Indio
Buenos Aires
Argentina
04/01/2021
Gustavo Daniel González
Foto
Photography ID: 409076
  Adult

Avellaneda
Buenos Aires
Argentina
08/24/2020
Gustavo Daniel González



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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
161292621/07/2022ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Gustavo Daniel González
155218806/02/2022ArgentinaNeuquénPrimeros PinosGustavo Daniel González
153566715/01/2022ArgentinaBuenos AiresEco Área Avellaneda, AvellanedaGustavo Daniel González
153569512/01/2022ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Gustavo Daniel González
145265626/08/2021ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Gustavo Daniel González
144909618/08/2021ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Gustavo Daniel González
143683827/07/2021ArgentinaCiudad Autónoma de Buenos AiresCamino del medio, Reserva Ecológica Costanera Sur (RECS)Gustavo Daniel González
142768003/07/2021ArgentinaBuenos AiresEco Área Avellaneda, AvellanedaGustavo Daniel González
141934121/06/2021ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Gustavo Daniel González
138727801/04/2021ArgentinaBuenos AiresRp 11, Punta IndioGustavo Daniel González
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 12/03/2026.