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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: 495086
  Immature

Don Bosco
Buenos Aires
Argentina
05/10/2022
Gustavo Ramos
Foto
Photography ID: 462274
  Adult

Cardales
Buenos Aires
Argentina
09/18/2021
Gustavo Ramos
Foto
Photography ID: 460630
  Immature

Capital
Mendoza
Argentina
08/11/2021
Gustavo Ramos
Foto
Photography ID: 460624
  Adult

Capital
Mendoza
Argentina
08/11/2021
Gustavo Ramos
Foto
Photography ID: 457298
  Immature

Zárate
Buenos Aires
Argentina
02/06/2021
Gustavo Ramos
Foto
Photography ID: 375033
  Juvenile

Dolores
Buenos Aires
Argentina
01/04/2020
Gustavo Ramos
Foto
Photography ID: 375032
  Juvenile

Dolores
Buenos Aires
Argentina
01/04/2020
Gustavo Ramos
Foto
Photography ID: 345832
  Adult

Quilmes
Buenos Aires
Argentina
04/06/2019
Gustavo Ramos



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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
158902210/05/2022ArgentinaBuenos AiresDon BoscoGustavo Ramos
146310418/09/2021ArgentinaBuenos AiresBarrio cerrado Monet, CardalesGustavo Ramos
145848111/08/2021ArgentinaMendozaPlaza España, CapitalGustavo Ramos
144620406/02/2021ArgentinaBuenos AiresCostanera, ZárateGustavo Ramos
117072604/01/2020ArgentinaBuenos AiresParque Libres del Sur, DoloresGustavo Ramos
96044806/04/2019ArgentinaBuenos AiresDon Bosco, QuilmesGustavo Ramos
82868210/10/2018ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Gustavo Ramos
72281027/01/2018ArgentinaCiudad Autónoma de Buenos AiresLaguna de los Coipos, Reserva Ecológica Costanera Sur (RECS)Gustavo Ramos
72280323/01/2018ArgentinaCiudad Autónoma de Buenos AiresLaguna de los Coipos, Reserva Ecológica Costanera Sur (RECS)Gustavo Ramos
70687221/01/2018ArgentinaBuenos AiresParque Natural Municipal Ribera Norte (San Isidro)Gustavo Ramos
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 25/03/2026.