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Machetornis rixosa

Cattle Tyrant


Machetornis rixosa

(Vieillot, 1819)
Picabuey
Suiriri-cavaleiro

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

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Synonyms: Machetornis rixosus, Tyrannus rixosus.

Subspecies:





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Conservation status according to BirdLife International: Least Concern


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





Geographic distribution


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Latest feeding records





Species photographs

Count: 2243

Foto
Photography ID: 712217
  Adult

Reserva Provincial Parque Luro
La Pampa
Argentina
10/24/2026
Jorge Gracia
Foto
Photography ID: 712106
  Adult

Lobería
Buenos Aires
Argentina
10/27/2026
Susana Gomez
Foto
Photography ID: 712068
  Adult

General Pico
La Pampa
Argentina
10/26/2026
Graciela Antenucci
Foto
Photography ID: 710408
  Adult

General Pico
La Pampa
Argentina
10/17/2026
Margarita Cervio
Foto
Photography ID: 709579
  Adult

Navarro
Buenos Aires
Argentina
02/28/2026
Ruben Ziruffo
Foto
Photography ID: 709035
  Adult

La Paloma
Rocha
Uruguay
10/05/2026
Hernán Tolosa
Foto
Photography ID: 708738
  Adult

General Pico
La Pampa
Argentina
10/06/2026
Margarita Cervio
Foto
Photography ID: 708737
  Adult

General Pico
La Pampa
Argentina
10/06/2026
Margarita Cervio
Foto
Photography ID: 708528
  Adult

Camping Ipona Guazú
Entre Ríos
Argentina
09/26/2026
Diego Alfonso Rosa



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Species vocalizations

Count: 9


IDAudio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
ER-5993Viviana Fuentes06/09/2026ArgentinaTucumánParque Guillermina - Av Mate De Luna 4100, San Miguel de TucumánIndistinguishableAdultNoNo
ER-5991Viviana Fuentes06/08/2026ArgentinaTucumánParque Guillermina - Av Mate De Luna 4100, San Miguel de TucumánIndistinguishableN/ANoNo
ER-5825Manuel Eduardo Serra04/10/2024ArgentinaCórdobaReserva Natural Los Quebrachitos, Cabana, UnquilloN/AAdultNoNo
ER-5593Viviana Fuentes01/06/2026ArgentinaTucumánColalao Del Valle - Ruta 40, Tafí del ValleIndistinguishableN/ANoNo
ER-5013Pablo Bruni03/22/2025ArgentinaCorrientesCerca Ruta 22, Concepción del Yaguareté CoráN/AN/AYesNo
ER-4703Viviana Fuentes03/13/2024ArgentinaTucumánSan Miguel, capitalN/AN/ANoNo
ER-4358Viviana Fuentes03/13/2024ArgentinaTucumánTucumánN/AN/ANoNo
ER-4123Pablo Bruni04/16/2022ArgentinaEntre RíosReserva Chaviyú, Departamento FederaciónN/AN/ANoNo
ER-3149Diego Oscar06/01/2021ArgentinaBuenos AiresDel VisoN/AN/AYesNo


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Species videos

Count: 7





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Species reports



 Detail of places sorted by number of records






Species records

Count: 14528



Page 1 of 1453
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
271285028/10/2026ArgentinaBuenos AiresParque Industrial Quilmes, Quilmes1Gabriel Carbajales
271259927/10/2026ArgentinaBuenos AiresLos Carpinchos, LoberíaSusana Gomez
271255327/10/2026ArgentinaCorrientesRuta 40 Entre Mercedes y Carlos Pellegrini4Diego Oscar
271230726/10/2026ArgentinaLa PampaReserva Natural Urbana Delfín Perez de General Pico., General PicoGraciela Antenucci
271215026/10/2026ArgentinaEntre RíosParque Nacional El Palmar3Diego Oscar
271210926/10/2026ArgentinaBuenos AiresVilla RosaDolores Fernandez
271187226/10/202607:34ArgentinaLa PampaReserva Provincial Parque LuroBlanca E ( Pochi ) Abbona
271149925/10/2026UruguayMontevideoRambla Pocitos1Pablo Bruni
271311024/10/2026ArgentinaLa PampaReserva Provincial Parque LuroClarisa Pastor
271274124/10/2026ArgentinaLa PampaReserva Provincial Parque LuroJorge Gracia
Page 1 of 1453

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Cattle Tyrant (Machetornis rixosa) – Species account. Accessed from www.ecoregistros.org on 30/10/2026.