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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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Latest feeding records




Last published photographs

Foto
Photography ID: 463784
  Adult

Casilda
Santa Fe
Argentina
06/24/2020
Claudia Alejandra Nigro
Foto
Photography ID: 434359
  Immature

Humedal Arroyo Maldonado
Maldonado
Uruguay
12/13/2020
Alejandra Pons
Foto
Photography ID: 426176
  Adult

Martín chico
Colonia
Uruguay
07/04/2020
Luis Mier
Foto
Photography ID: 423909
  Adult

Embalse El Carrizal
Mendoza
Argentina
09/06/2020
Silvio Montani
Foto
Photography ID: 423598
  Immature

Villa Ventana
Buenos Aires
Argentina
12/07/2020
Mauro Desch
Foto
Photography ID: 423262
  Adult

ruta 2 provincial
Jujuy
Argentina
11/29/2020
Luis Fernandez Campos



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Last Vocalizations published



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
Hugo Caverzasi04/11/2020ArgentinaCórdobaCampo E. AlvarezLas VarillasN/AN/ANoNo



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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
134430531/12/2020ArgentinaBuenos AiresReserva Natural Punta LaraFacundo Irazoqui
133878430/12/2020ArgentinaBuenos AiresSan Antonio de Padua1Nicolas Olejnik
133869229/12/2020ArgentinaBuenos AiresCasco urbano, Ensenada1Javier A. Origlia
133828129/12/2020ArgentinaBuenos AiresRamos Mejía1Nicolas Olejnik
142065128/12/2020ArgentinaMendozaSan Rafael2Gabriel Carbajales
133598523/12/2020ArgentinaBuenos AiresReserva Natural Laguna de Rocha2Nicolas Olejnik
133441720/12/2020ArgentinaCiudad Autónoma de Buenos AiresAvenida Costanera Sur, Reserva Ecológica Costanera Sur (RECS)1Julián Tocce
133417218/12/2020ArgentinaBuenos AiresReserva Natural Urbana El Corredor, Bella Vista3Jorge Fernando Di Laudo
133325518/12/2020ArgentinaBuenos AiresCalle 2 1350, La Plata1Jorge La Grotteria
133324718/12/2020ArgentinaBuenos AiresAutopista Doctor Ricardo Balbín y, Hudson1Jorge La Grotteria
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 30/03/2026.