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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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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: 405624
  Adult

San Antonio de Padua
Buenos Aires
Argentina
07/24/2020
Román Montero
Foto
Photography ID: 396437
  Adult

San Antonio de Padua
Buenos Aires
Argentina
03/17/2020
Román Montero
Foto
Photography ID: 344294
  Adult

Parque del Bicentenario
Salta
Argentina
07/21/2019
Román Montero
Foto
Photography ID: 128433
  Adult

Colón
Entre Ríos
Argentina
12/07/2015
Román Montero
Foto
Photography ID: 128417
  Adult

Colón
Entre Ríos
Argentina
12/08/2015
Román Montero
Foto
Photography ID: 115588
  Adult

Castelar
Buenos Aires
Argentina
09/20/2015
Román Montero
Foto
Photography ID: 105691
  Adult

Castelar
Buenos Aires
Argentina
07/12/2015
Román Montero
Foto
Photography ID: 99901
  Adult

Castelar
Buenos Aires
Argentina
05/27/2015
Román Montero



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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
242280919/01/2026ArgentinaBuenos AiresLas ToninasRomán Montero
151531113/12/2021ArgentinaBuenos AiresPlaza Cumelén (plaza del Vagón), CastelarRomán Montero
127571224/07/2020ArgentinaBuenos AiresSan Antonio de PaduaRomán Montero
123941417/03/2020ArgentinaBuenos AiresSan Antonio de PaduaRomán Montero
115074921/12/2019ArgentinaBuenos AiresCeamse - Complejo Ambiental Norte iiiRomán Montero
114906715/12/2019ArgentinaBuenos AiresParque Plaza Montero, Las FloresRomán Montero
114873414/12/2019ArgentinaBuenos AiresLa Colorada, Las FloresRomán Montero
110598705/10/2019ArgentinaBuenos AiresParque Leloir, ItuzaingóRomán Montero
95415323/07/2019ArgentinaSaltaRn34, límite con provincia de JujuyRomán Montero
95393221/07/2019ArgentinaSaltaParque del BicentenarioRomán Montero
Page 1

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Citation recommended:

EcoRegistros. 2026. Cattle Tyrant (Machetornis rixosa) - Species sheet. Acceded from https://www.ecoregistros.org on 09/03/2026.










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