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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 Chajarí

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: 182626
  Immature

Chajarí
Entre Ríos
Argentina
12/24/2016
Hugo Caprotti



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Last Vocalizations published



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
Carlos M. Grassini08/18/2013ArgentinaEntre RíosGorgonzola, entre Posina y Monza, monte de espinalChajaríIndistinguishableAdultYesNo



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 Reports


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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
232362620/07/2025ArgentinaEntre RíosZona San Pedro, Chajarí1Pablo Bruni
221921822/12/2024ArgentinaEntre RíosZona San Pedro, Chajarí1Pablo Bruni
213799229/08/2024ArgentinaEntre RíosSan Antonio 1665, Chajarí2Patricia Beatriz Benitez
204833522/06/2024ArgentinaEntre RíosChajaríMariano Costa
200554924/02/2024ArgentinaEntre RíosZona San Pedro, Chajarí1Pablo Bruni
179045906/07/2023ArgentinaEntre Ríostermas Chajarí, ChajaríAdrian Braidotti
162078408/08/2022ArgentinaEntre RíosAvenida Hipólito Yrigoyen 3690, Chajarí2María Silvina Bruni
154916920/02/2022ArgentinaEntre RíosRuta 2 hacia San Pedro y Los Conquistadores, Chajarí1Pablo Bruni
144143307/08/2021ArgentinaEntre RíosAv Padre Gallay y Av Libertad, Chajarí2María Silvina Bruni
52036424/12/2016ArgentinaEntre RíosBarrio Centro, Rivadavia y Urquiza, ChajaríHugo Caprotti
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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