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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: 649112
  Immature

La Plata
Buenos Aires
Argentina
08/26/2025
María Alejandra Sosa
Foto
Photography ID: 649111
  Immature

La Plata
Buenos Aires
Argentina
08/26/2025
María Alejandra Sosa
Foto
Photography ID: 419382
  Adult

La Plata
Buenos Aires
Argentina
05/04/2020
María Alejandra Sosa
Foto
Photography ID: 418506
  Juvenile

Concordia
Entre Ríos
Argentina
01/02/2019
María Alejandra Sosa
Foto
Photography ID: 107330
  Adult

Colonia Berduc
Entre Ríos
Argentina
07/26/2015
María Alejandra Sosa
Foto
Photography ID: 74161
  Adult

Concordia
Entre Ríos
Argentina
12/26/2014
María Alejandra Sosa
Foto
Photography ID: 46839
  Juvenile

Villa Elisa
Buenos Aires
Argentina
03/29/2014
María Alejandra Sosa



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Last Vocalizations published



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
María Alejandra Sosa12/03/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AAdultYesNo
María Alejandra Sosa12/01/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AN/ANoNo
María Alejandra Sosa12/01/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AN/ANoNo
María Alejandra Sosa12/01/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AN/ANoNo
María Alejandra Sosa08/30/2021ArgentinaBuenos AiresAvenida 60 440La PlataN/AN/AYesNo



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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
244508708/03/202612:11ArgentinaBuenos AiresCamino de la Ribera Norte 650-602, Parque Natural Municipal Ribera Norte (San Isidro)1María Alejandra Sosa
244510308/03/202615:33ArgentinaBuenos AiresHipólito Yrigoyen 2090, Martínez2María Alejandra Sosa
244023628/02/202612:40ArgentinaBuenos AiresRamal Escobar, Belén de Escobar2María Alejandra Sosa
243299414/02/202612:52ArgentinaBuenos AiresReserva Natural Puertos, Belén de Escobar1María Alejandra Sosa
242995908/02/202614:52ArgentinaCiudad Autónoma de Buenos AiresAgustín Méndez 80, Buenos Aires1María Alejandra Sosa
242997008/02/202615:06ArgentinaCiudad Autónoma de Buenos AiresAvenida Ernesto Tornquist 2746, Lago de Regatas1María Alejandra Sosa
242983608/02/202613:59ArgentinaCiudad Autónoma de Buenos AiresJuana Manso, Buenos Aires1María Alejandra Sosa
242939208/02/202611:47ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)2María Alejandra Sosa
242838106/02/202618:15ArgentinaBuenos AiresAutopista Doctor Ricardo Balbín, Área Reserva Cinturón Ecológico1María Alejandra Sosa
242619126/01/202611:22ArgentinaEntre RíosConcordia1María Alejandra Sosa
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 15/03/2026.