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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: 232995
  Adult

Palma Sola
Jujuy
Argentina
10/12/2017
Alec Earnshaw
Foto
Photography ID: 62142
  Juvenile

Copiapó
Región de Atacama
Chile
05/24/2008
Alec Earnshaw
Foto
Photography ID: 54368
  Juvenile

Olivos
Buenos Aires
Argentina
06/14/2014
Alec Earnshaw
Foto
Photography ID: 44947
  Juvenile

Parque Provincial Chancaní
Córdoba
Argentina
03/03/2014
Alec Earnshaw



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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
242381024/01/2026ArgentinaBuenos AiresVicente LópezAlec Earnshaw
227428017/04/2025ArgentinaBuenos AiresParque Natural Municipal Ribera Norte (San Isidro)3Alec Earnshaw
217688319/10/2024ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Alec Earnshaw
215900028/09/2024ArgentinaBuenos AiresCamino de El Cazal, Belén de EscobarAlec Earnshaw
203965101/06/2024ArgentinaBuenos AiresParque Natural Municipal Ribera Norte (San Isidro)Alec Earnshaw
203960601/06/2024ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Alec Earnshaw
202964802/05/2024ArgentinaBuenos AiresRuta Provincial 19 (Camino Negro), Reserva Natural Punta LaraAlec Earnshaw
202905728/04/2024ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Alec Earnshaw
202449320/04/2024ArgentinaBuenos AiresReserva Natural Laguna de San VicenteAlec Earnshaw
202021604/04/2024ArgentinaCiudad Autónoma de Buenos AiresLago de RegatasAlec Earnshaw
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 13/03/2026.