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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 Guatraché

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: 166818
  Adult

Guatraché
La Pampa
Argentina
09/11/2016
Federico Burgos Bauer
Foto
Photography ID: 159410
  Immature

Guatraché
La Pampa
Argentina
07/25/2016
Federico Burgos Bauer
Foto
Photography ID: 119633
  Juvenile

Guatraché
La Pampa
Argentina
10/12/2015
Federico Burgos Bauer
Foto
Photography ID: 113484
  Adult

Guatraché
La Pampa
Argentina
09/06/2015
Andres Espindola
Foto
Photography ID: 113448
  Immature

Guatraché
La Pampa
Argentina
09/05/2015
Marcelo Fabio Dolsan
Foto
Photography ID: 113380
  Adult

Guatraché
La Pampa
Argentina
09/05/2015
Andres Espindola
Foto
Photography ID: 113278
♂ ♀
  Adult

Guatraché
La Pampa
Argentina
09/05/2015
Federico Burgos Bauer
Foto
Photography ID: 113245
  Immature

Guatraché
La Pampa
Argentina
09/06/2015
Juan Jose Tamagnone
Foto
Photography ID: 113188
 
Guatraché
La Pampa
Argentina
09/05/2015
Lucas Nikolaus
Foto
Photography ID: 113146
♂ ♀
  Juvenile

Guatraché
La Pampa
Argentina
09/06/2015
Diego Hernán Pérez
Foto
Photography ID: 113144
♂ ♀
  Adult

Guatraché
La Pampa
Argentina
09/06/2015
Diego Hernán Pérez
Foto
Photography ID: 113100
 
Guatraché
La Pampa
Argentina
09/06/2015
Mauricio Alberto Lescano



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Last Vocalizations published



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
Federico Burgos Bauer01/28/2015ArgentinaLa PampaLaguna GuatrachéGuatrachéN/AAdultYesNo



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Last Filmings published




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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
47609611/09/2016ArgentinaLa PampaRuta 3, GuatrachéFederico Burgos Bauer
45785225/07/2016ArgentinaLa PampaGuatraché, GuatrachéFederico Burgos Bauer
34655912/10/2015ArgentinaLa PampaReserva Natural Laguna Guatraché, GuatrachéFederico Burgos Bauer
32644406/09/2015ArgentinaLa PampaReserva Natural Laguna Guatraché, GuatrachéAndres Espindola
32611506/09/2015ArgentinaLa PampaGuatrachéJuan Jose Tamagnone
32601806/09/2015ArgentinaLa PampaReserva Natural Laguna Guatraché, GuatrachéDiego Hernán Pérez
32596806/09/2015ArgentinaLa PampaGuatrachéMauricio Alberto Lescano
32525006/09/2015ArgentinaLa PampaGuatrachéLihué Bruno
32637405/09/2015ArgentinaLa PampaReserva Natural Laguna Guatraché, Guatraché3Marcelo Fabio Dolsan
32626005/09/2015ArgentinaLa PampaReserva Natural Laguna Guatraché, GuatrachéAndres Espindola
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.