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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 Gualeguaychú

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: 430241
  Adult

Gualeguaychú
Entre Ríos
Argentina
01/21/2021
Gustavo Puente
Foto
Photography ID: 413343
  Adult

Gualeguaychú
Entre Ríos
Argentina
12/07/2019
Mario Daniel Piccini
Foto
Photography ID: 370799
  Adult

Gualeguaychú
Entre Ríos
Argentina
01/01/2020
Gustavo Puente
Foto
Photography ID: 308485
 
Gualeguaychú
Entre Ríos
Argentina
01/01/2019
Gustavo Puente
Foto
Photography ID: 250367
  Adult

Gualeguaychú
Entre Ríos
Argentina
01/19/2018
Gustavo Puente
Foto
Photography ID: 184596
  Adult

Gualeguaychú
Entre Ríos
Argentina
01/09/2017
Gustavo Puente
Foto
Photography ID: 184475
  Adult

Gualeguaychú
Entre Ríos
Argentina
01/08/2017
Gustavo Puente
Foto
Photography ID: 165373
  Adult

Gualeguaychú
Entre Ríos
Argentina
05/12/2016
Rodolfo Julio Velazquez
Foto
Photography ID: 155378
  Adult

Gualeguaychú
Entre Ríos
Argentina
09/20/2015
Rodolfo Julio Velazquez
Foto
Photography ID: 139742
  Adult

Gualeguaychú
Entre Ríos
Argentina
02/24/2016
Gustavo Puente
Foto
Photography ID: 132756
  Adult

Gualeguaychú
Entre Ríos
Argentina
01/07/2016
Gustavo Puente
Foto
Photography ID: 46379
  Adult

Gualeguaychú
Entre Ríos
Argentina
04/01/2014
Gustavo Puente



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 Reports


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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
238564312/11/2025ArgentinaEntre RíosRuta Provincial 42, Gualeguaychú1Susana Gomez
224836414/02/2025ArgentinaEntre RíosCeibas--camino Cuatro Hermanas, Gualeguaychú1Faustino Hollmann
199416407/07/2022ArgentinaEntre RíosEntre Ríos, Gualeguaychú5Naré Berduc
150966605/12/2021ArgentinaEntre RíosCerros Indios, GualeguaychúAlec Earnshaw
135284421/01/2021ArgentinaEntre RíosParque Unzué, GualeguaychúGustavo Puente
199416505/01/2021ArgentinaEntre RíosÑandubaysal, GualeguaychúNaré Berduc
132205305/12/2020ArgentinaEntre RíosRuta Provincial 16, Gualeguaychú2Jorge La Grotteria
132180205/12/2020ArgentinaEntre RíosRuta Provincial 16, Gualeguaychú2María Alejandra Sosa
115596401/01/2020ArgentinaEntre RíosCamino de la Costa, GualeguaychúGustavo Puente
129540207/12/2019ArgentinaEntre RíosGualeguaychúMario Daniel Piccini
Page 1

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Citation recommended:

EcoRegistros. 2026. Cattle Tyrant (Machetornis rixosa) - Species sheet. Acceded from https://www.ecoregistros.org on 14/03/2026.