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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 Rocha

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: 333437
  Adult

Laguna Negra
Rocha
Uruguay
05/19/2019
Luis Mier
Foto
Photography ID: 292166
  Adult

Barra del Chuy
Rocha
Uruguay
10/14/2018
Luis Mier
Foto
Photography ID: 191123
  Adult

Potrerillo de Santa Teresa.
Rocha
Uruguay
02/19/2017
Luis Mier
Foto
Photography ID: 156085
  Adult

La Paloma
Rocha
Uruguay
01/31/2016
Rodolfo Julio Velazquez
Foto
Photography ID: 156084
 
La Paloma
Rocha
Uruguay
01/31/2016
Rodolfo Julio Velazquez
Foto
Photography ID: 82083
  Adult

Laguna de Castillos
Rocha
Uruguay
01/31/2015
Pablo Eguia
Foto
Photography ID: 78915
  Adult

Laguna de Rocha
Rocha
Uruguay
01/21/2015
Mauricio Silvera
Foto
Photography ID: 38570
  Adult

La Paloma
Rocha
Uruguay
01/25/2014
Gonzalo Campaña



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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
226146311/02/2025UruguayRocha-33.986274, -53.921531, Camino de Wilson3Pablo Eguia
226133811/02/2025UruguayRocha-33.862, -53.919, Camino de Wilson2Pablo Eguia
226065909/02/2025UruguayRochaLa Pedrera2Pablo Eguia
226028506/02/2025UruguayRochaLaguna Negra2Pablo Eguia
226024206/02/2025UruguayRochaBañado de los Indios, Ruta 142Pablo Eguia
226016005/02/2025UruguayRochaLa Pedrera2Pablo Eguia
225850703/02/2025UruguayRochaRuta 10 entre La Paloma y Laguna de Rocha1Pablo Eguia
225847703/02/2025UruguayRochaLaguna de Rocha2Pablo Eguia
225806201/02/2025UruguayRochaLa Pedrera1Pablo Eguia
199427711/02/2020UruguayRochaDepartamento de RochaNaré Berduc
Page 1

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Citation recommended:

EcoRegistros. 2026. Cattle Tyrant (Machetornis rixosa) - Species sheet. Acceded from https://www.ecoregistros.org on 19/04/2026.