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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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Records from Trelew

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: 634507
  Adult

Trelew
Chubut
Argentina
05/09/2025
Juan Manuel Canepa
Foto
Photography ID: 568176
  Juvenile

Trelew
Chubut
Argentina
01/25/2024
Zulima América Schupbach
Foto
Photography ID: 457535
  Adult

Trelew
Chubut
Argentina
07/10/2021
Zulima América Schupbach
Foto
Photography ID: 457532
  Adult

Trelew
Chubut
Argentina
07/10/2021
Zulima América Schupbach
Foto
Photography ID: 453742
♂ ♀
  Adult

Trelew
Chubut
Argentina
07/01/2021
Zulima América Schupbach
Foto
Photography ID: 453088
  Adult

Trelew
Chubut
Argentina
06/30/2021
Zulima América Schupbach
Foto
Photography ID: 453069
  Adult

Trelew
Chubut
Argentina
06/29/2021
Zulima América Schupbach
Foto
Photography ID: 446774
  Adult

Trelew
Chubut
Argentina
05/22/2021
Zulima América Schupbach
Foto
Photography ID: 446773
♂ ♀
  Adult

Trelew
Chubut
Argentina
05/22/2021
Zulima América Schupbach
Foto
Photography ID: 409523
♂ ♀
  Adult

Trelew
Chubut
Argentina
08/27/2020
Zulima América Schupbach
Foto
Photography ID: 409522
♂ ♀
  Adult

Trelew
Chubut
Argentina
08/27/2020
Zulima América Schupbach
Foto
Photography ID: 409521
♂ ♀
  Adult

Trelew
Chubut
Argentina
08/27/2020
Zulima América Schupbach



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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
228773809/05/2025ArgentinaChubutZona de chacras ruta 7, TrelewJuan Manuel Canepa
196319725/01/2024ArgentinaChubutEn casa zona urbana, TrelewZulima América Schupbach
176646022/04/2023ArgentinaChubutLaguna Chiquichano, TrelewAdrian Braidotti
144729810/07/2021ArgentinaChubutEn casa zona urbana, Trelew2Zulima América Schupbach
142775401/07/2021ArgentinaChubutEn casa zona urbana, Trelew2Zulima América Schupbach
142476930/06/2021ArgentinaChubutEn casa zona urbana, Trelew2Zulima América Schupbach
142475929/06/2021ArgentinaChubutArea de Fitorremediación, Trelew1Zulima América Schupbach
140825222/05/2021ArgentinaChubutEn casa zona urbana, TrelewZulima América Schupbach
138198704/02/2021ArgentinaChubutTrelewMarcelo Funes
128271227/08/2020ArgentinaChubutEn casa zona urbana, Trelew2Zulima América Schupbach
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 10/03/2026.