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Cattle Tyrant

Machetornis rixosa
(Vieillot, LJP, 1819)
Picabuey
Suiriri-cavaleiro

Family: Tyrannidae
Order: Passeriformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Records from San Clemente del Tuyú

Conservation status according to BirdLife International: Least Concern

Synonyms: Machetornis rixosus, Tyrannus rixosus.

Subspecies:


Description: A medium-sized, slender flycatcher with bright yellow underparts and soft brownish tones on the upperparts. The head shows a subtle gray wash, sometimes with a faint pale patch that is not easily visible at a distance. It often adopts an upright stance, perching on exposed structures. The bill is short, dark, and sturdy, suited for seizing active prey, while the rounded wings and moderately long tail give it a balanced, streamlined profile. Overall, it displays the clean, contrasting look typical of open-country tyrant flycatchers.

Geographical distribution: Widespread in South America, ranging from the southern Amazon and north-central regions down to central-eastern Argentina, and also present in Uruguay, Paraguay, and parts of Bolivia. It occurs continuously throughout tropical and subtropical zones, extending into temperate areas where open environments remain available.

Habitat: Occupies diverse open habitats, including natural grasslands, savannas, rural landscapes, roadsides, wetland edges, and even urbanized zones. Frequently associates with livestock, vehicles, or isolated structures that provide elevated perches essential for its foraging technique. It avoids dense forests but may use forest edges and degraded clearings.

Diet: Primarily insectivorous, feeding on medium to large insects captured in short, agile sallies from perches. It often pursues prey flushed by livestock, taking advantage of animals’ movement to detect insects. Occasionally consumes other arthropods or small vertebrates, reflecting a flexible feeding strategy according to local conditions.

Behavior: An active and alert species, frequently shifting between perches. Its most distinctive behavior is following livestock, which helps it locate disturbed insects. It flies with steady, direct wingbeats alternating with brief glides. Pairs or small groups are common, usually keeping watch from posts, fences, or rooftops.

Breeding: Builds a domed nest of fine plant fibers, roots, and assorted materials, placed in trees, human structures, or sometimes inside abandoned nests of other species. The typical clutch consists of two to three eggs, incubated by both adults. Young are fed regularly with prey captured during short flights around the nesting territory.

Conservation status: Classified globally as Least Concern, with stable populations and a broad distribution. Its ability to adapt to modified landscapes and coexist with rural activity has supported its persistence across much of its range.


Author of this compilation: EcoRegistros – 08/12/2025




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Last published photographs

Foto
Photography ID: 530416
  Adult

San Clemente del Tuyú
Buenos Aires
Argentina
03/12/2023
Carlos De Biagi
Foto
Photography ID: 530262
  Adult

San Clemente del Tuyú
Buenos Aires
Argentina
03/11/2023
Carlos De Biagi
Foto
Photography ID: 529970
  Adult

San Clemente del Tuyú
Buenos Aires
Argentina
03/28/2023
Eduardo Cusano
Foto
Photography ID: 529412
  Adult

San Clemente del Tuyú
Buenos Aires
Argentina
03/10/2023
Carlos De Biagi
Foto
Photography ID: 464553
  Adult

San Clemente del Tuyú
Buenos Aires
Argentina
08/18/2021
Claudio Mendez
Foto
Photography ID: 42808
  Immature

San Clemente del Tuyú
Buenos Aires
Argentina
12/18/2012
Victoria Herrera



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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
243483817/02/202608:40ArgentinaBuenos AiresAvenida I 1374-1370, San Clemente del Tuyú2Santiago Juan Torres
226722722/03/202513:00ArgentinaBuenos AiresGalicia 2669, San Clemente del Tuyú2Filippo Riffaldi
226455422/03/202513:00ArgentinaBuenos AiresGalicia 2669, San Clemente del Tuyú2Santiago Juan Torres
213600119/08/2024ArgentinaBuenos AiresPuerto de San Clemente, San Clemente del Tuyú1Diego Oscar
193097908/12/2023ArgentinaBuenos AiresPuerto de San Clemente, San Clemente del Tuyú1Enrique Chiurla
193026708/12/2023ArgentinaBuenos AiresPuerto de San Clemente, San Clemente del Tuyú1Victor Hugo Michelini
189105101/10/2023ArgentinaBuenos AiresCampo erandio, San Clemente del TuyúFacundo Irazoqui
190157129/07/2023ArgentinaBuenos AiresPuerto de San Clemente, San Clemente del Tuyú1José Luis Ianiro
174205902/04/2023ArgentinaBuenos AiresPuerto, San Clemente del Tuyú1Carlos Enrique Alvarez
174184602/04/2023ArgentinaBuenos AiresPuerto de San Clemente, San Clemente del Tuyú1Diego Oscar
Page 1

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Citation recommended:

EcoRegistros. 2026. Cattle Tyrant (Machetornis rixosa) - Species sheet. Acceded from https://www.ecoregistros.org on 16/03/2026.