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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 Las Varillas

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: 439559
 
Las Varillas
Córdoba
Argentina
04/03/2021
Hugo Caverzasi
Foto
Photography ID: 392009
 
Las Varillas
Córdoba
Argentina
03/28/2020
Hugo Caverzasi
Foto
Photography ID: 206552
  Juvenile

Las Varillas
Córdoba
Argentina
06/17/2017
Hugo Caverzasi



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Last Vocalizations published



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
Hugo Caverzasi04/11/2020ArgentinaCórdobaCampo E. AlvarezLas VarillasN/AN/ANoNo



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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
213518817/08/2024ArgentinaCórdobaGauchito Gil, Las Varillas2Hugo Caverzasi
203451518/05/2024ArgentinaCórdobaIntendente I. Calvo Alvarez 270, Las Varillas30Hugo Caverzasi
167891723/11/2022ArgentinaCórdobaCamino a La Sara, Las Varillas1Hugo Caverzasi
157220817/04/2022ArgentinaCórdobaEstablecimiento El Roble, Las Varillas1Hugo Caverzasi
138943103/04/2021ArgentinaCórdobaCampo Gudiño, Las Varillas1Hugo Caverzasi
136575006/02/2021ArgentinaCórdobaCampo E. Alvarez, Las VarillasHugo Caverzasi
124157709/05/2020ArgentinaCórdobaCampo E. Alvarez, Las VarillasHugo Caverzasi
123511911/04/2020ArgentinaCórdobaCampo E. Alvarez, Las VarillasHugo Caverzasi
123194428/03/2020ArgentinaCórdobaCampo E. Alvarez, Las VarillasHugo Caverzasi
58389217/06/2017ArgentinaCórdobaEl rob, Las VarillasHugo Caverzasi
Page 1

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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 18/03/2026.