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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: 588385
  Juvenile

Chajarí
Entre Ríos
Argentina
06/22/2024
Mariano Costa
Foto
Photography ID: 586762
  Adult

Villaguay
Entre Ríos
Argentina
06/09/2024
Mariano Costa
Foto
Photography ID: 63841
  Juvenile

Temuco
Región de la Araucanía
Chile
04/23/2014
Mariano Costa
Foto
Photography ID: 63300
  Adult

Lamarque
Río Negro
Argentina
09/25/2014
Mariano Costa
Foto
Photography ID: 22226
  Juvenile

El Hoyo
Chubut
Argentina
07/06/2012
Mariano Costa



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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
239097625/11/202516:20ChileRegión de Los LagosQuebrada HondaMariano Costa
234881028/08/202511:29ArgentinaEntre RíosDistrito Yuquerí, ConcordiaMariano Costa
234288616/08/2025ArgentinaEntre RíosDistrito Yuquerí, ConcordiaMariano Costa
213840631/08/2024ChileRegión de Los LagosLos MuermosMariano Costa
210178907/07/2024ArgentinaRío NegroRuta Nacional 1511Mariano Costa
205088125/06/2024ArgentinaEntre RíosRuta Provincial 2Mariano Costa
204833522/06/2024ArgentinaEntre RíosChajaríMariano Costa
204248009/06/2024ArgentinaEntre RíosCruce Rp20 y Rp18, VillaguayMariano Costa
196421203/02/2024ChileRegión de Los LagosPuerto MonttMariano Costa
128657026/08/2020ArgentinaRío NegroRuta Nacional 22 (-38,997057, -67,870527)Mariano Costa
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 29/03/2026.