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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 Laguna Negra

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: 454079
  Adult

Laguna Negra
Chubut
Argentina
07/03/2021
Zulima América Schupbach
Foto
Photography ID: 453741
  Adult

Laguna Negra
Chubut
Argentina
06/30/2021
Zulima América Schupbach
Foto
Photography ID: 453057
  Adult

Laguna Negra
Chubut
Argentina
06/28/2021
Zulima América Schupbach
Foto
Photography ID: 451335
  Adult

Laguna Negra
Chubut
Argentina
06/18/2021
Zulima América Schupbach
Foto
Photography ID: 436211
  Adult

Laguna Negra
Chubut
Argentina
01/24/2021
Zulima América Schupbach
Foto
Photography ID: 436210
  Adult

Laguna Negra
Chubut
Argentina
01/24/2021
Zulima América Schupbach
Foto
Photography ID: 403855
  Adult

Laguna Negra
Chubut
Argentina
07/03/2020
Zulima América Schupbach
Foto
Photography ID: 401026
  Adult

Laguna Negra
Chubut
Argentina
05/30/2020
Zulima América Schupbach
Foto
Photography ID: 394941
  Adult

Laguna Negra
Chubut
Argentina
04/13/2020
Zulima América Schupbach
Foto
Photography ID: 268665
  Immature

Laguna Negra
Chubut
Argentina
06/03/2018
Zulima América Schupbach
Foto
Photography ID: 204462
  Juvenile

Laguna Negra
Chubut
Argentina
05/18/2017
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
142895703/07/2021ArgentinaChubutKm 1.4, Laguna Negra1Zulima América Schupbach
142477930/06/2021ArgentinaChubutKm 2.2, Laguna Negra1Zulima América Schupbach
142474728/06/2021ArgentinaChubutKm 1.4, Laguna Negra1Zulima América Schupbach
141978518/06/2021ArgentinaChubutSalitral de Rawson, Laguna Negra1Zulima América Schupbach
137708624/01/2021ArgentinaChubutAcceso por Ruta Provincial 7, Laguna Negra1Zulima América Schupbach
127301803/07/2020ArgentinaChubutKm 1.4, Laguna NegraZulima América Schupbach
126389630/05/2020ArgentinaChubutKm 1.4, Laguna NegraZulima América Schupbach
123733413/04/2020ArgentinaChubutKm 1.4, Laguna NegraZulima América Schupbach
84895029/11/2018ArgentinaChubutRuta sin nombrar (-43,243970, -65,241030), Laguna Negra2Mariano Costa
84648329/11/2018ArgentinaChubutRuta sin nombrar (-43,243970, -65,241030), Laguna Negra2Jorge 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 09/03/2026.










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