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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 Luján

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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Latest feeding records




Last published photographs

Foto
Photography ID: 668337
  Adult

Luján
Buenos Aires
Argentina
01/18/2026
Silvia Sokolovsky
Foto
Photography ID: 615583
  Adult

Luján
Buenos Aires
Argentina
12/22/2024
Silvia Sokolovsky
Foto
Photography ID: 481570
  Adult

Luján
Buenos Aires
Argentina
02/06/2022
Silvia Sokolovsky
Foto
Photography ID: 403276
  Adult

Luján
Buenos Aires
Argentina
07/04/2020
Silvia Sokolovsky
Foto
Photography ID: 383765
  Adult

Luján
Buenos Aires
Argentina
02/21/2020
Desalvo T. Benjamin
Foto
Photography ID: 353092
♂ ♀
  Adult

Luján
Buenos Aires
Argentina
09/28/2019
Silvia Sokolovsky
Foto
Photography ID: 341061
♂ ♀
  Adult

Luján
Buenos Aires
Argentina
07/13/2019
Silvia Sokolovsky
Foto
Photography ID: 220041
  Adult

Luján
Buenos Aires
Argentina
09/22/2017
Silvia Sokolovsky
Foto
Photography ID: 207719
  Adult

Luján
Buenos Aires
Argentina
06/22/2017
Silvia Sokolovsky



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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
241824218/01/2026ArgentinaBuenos AiresRodizio Campo, LujánSilvia Sokolovsky
221308822/12/2024ArgentinaBuenos AiresCamino a carlos keen, LujánSilvia Sokolovsky
154339706/02/2022ArgentinaBuenos AiresVías del tren, LujánSilvia Sokolovsky
131477923/11/2020ArgentinaBuenos AiresAvenida Lorenzo Casey 3400, LujánMarcelo Gavensky
126841004/07/2020ArgentinaBuenos AiresLuján, LujánSilvia Sokolovsky
119819121/02/2020ArgentinaBuenos AiresUniversidad Nacional de Luján, Luján2Desalvo T. Benjamin
114062330/11/2019ArgentinaBuenos AiresLuján2Desalvo T. Benjamin
112272031/10/2019ArgentinaBuenos AiresUniversidad Nacional de Luján, LujánDesalvo T. Benjamin
110133728/09/2019ArgentinaBuenos AiresRodizio Campo, LujánSilvia Sokolovsky
94579713/07/2019ArgentinaBuenos AiresUniversidad Nacional de Luján, LujánSilvia Sokolovsky
Page 1

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Citation recommended:

EcoRegistros. 2026. Cattle Tyrant (Machetornis rixosa) - Species sheet. Acceded from https://www.ecoregistros.org on 23/03/2026.