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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 Reserva Natural del Pilar

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: 675267
  Juvenile

Reserva Natural del Pilar
Buenos Aires
Argentina
02/26/2026
Dolores Fernandez
Foto
Photography ID: 136976
  Juvenile

Reserva Natural del Pilar
Buenos Aires
Argentina
02/06/2016
Mauricio Secchi
Foto
Photography ID: 7392
  Juvenile

Reserva Natural del Pilar
Buenos Aires
Argentina
06/11/2011
Carlos Gianoli
Foto
Photography ID: 7297
  Juvenile

Reserva Natural del Pilar
Buenos Aires
Argentina
06/11/2011
Carlos Gianoli
Foto
Photography ID: 6919
  Juvenile

Reserva Natural del Pilar
Buenos Aires
Argentina
05/04/2011
Nicolas Olejnik
Foto
Photography ID: 4892
  Immature

Reserva Natural del Pilar
Buenos Aires
Argentina
03/14/2011
Nicolas Olejnik



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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
243924426/02/2026ArgentinaBuenos AiresReserva Natural del PilarDolores Fernandez
140425415/05/2021ArgentinaBuenos AiresReserva Natural del Pilar2Diego Oscar
125367113/03/2020ArgentinaBuenos AiresReserva Natural del Pilar1Gabriel Carbajales
112009826/10/2019ArgentinaBuenos AiresReserva Natural del PilarJorge Fernando Di Laudo
125367014/04/2019ArgentinaBuenos AiresReserva Natural del Pilar2Gabriel Carbajales
90891114/04/2019ArgentinaBuenos AiresReserva Natural del Pilar2Sebastián Otero
90520628/02/2019ArgentinaBuenos AiresPuente sobre arroyo., Reserva Natural del PilarGuillermo C Olivero
79155912/08/2018ArgentinaBuenos AiresReserva Natural del Pilar1Diego Oscar
76062325/05/2018ArgentinaBuenos AiresReserva Natural del PilarRicardo A. Palonsky
64274819/11/2017ArgentinaBuenos AiresReserva Natural del PilarRicardo A. Palonsky
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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