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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 Ciudad Autónoma de Buenos Aires

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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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
238372406/11/2025ArgentinaCiudad Autónoma de Buenos AiresReserva Costanera Sur, Ciudad Autónoma de Buenos AiresFernanda Ferrari
228849518/04/2025ArgentinaCiudad Autónoma de Buenos AiresBelgrano, Ciudad Autónoma de Buenos AiresGerardo Lloret
212673728/07/2024ArgentinaCiudad Autónoma de Buenos AiresCiudad Autónoma de Buenos AiresJorge Blackhall
195490710/01/2024ArgentinaCiudad Autónoma de Buenos AiresAlmagro, Ciudad Autónoma de Buenos Aires2Daniela Espinosa
164833603/10/2022ArgentinaCiudad Autónoma de Buenos AiresAlmagro, Ciudad Autónoma de Buenos Aires3Luis Cesar Tejo
134995317/01/2021ArgentinaCiudad Autónoma de Buenos AiresMuñiz e Hipólito Yrigoyen (almagro), Ciudad Autónoma de Buenos Aires3Luis Cesar Tejo
61937823/09/2017ArgentinaCiudad Autónoma de Buenos AiresCiudad Autónoma de Buenos Aires2Diego Oscar
55347205/03/2017ArgentinaCiudad Autónoma de Buenos AiresVilla Devoto, Ciudad Autónoma de Buenos AiresKevin Patricio Darling
69116410/09/2016ArgentinaCiudad Autónoma de Buenos AiresCiudad Autónoma de Buenos AiresVicente Piccirillo
69109031/05/2015ArgentinaCiudad Autónoma de Buenos AiresCiudad Autónoma de Buenos AiresVicente Piccirillo
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.