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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 Santo Tomé

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: 489195
  Adult

Santo Tomé
Santa Fe
Argentina
02/20/2018
Eduardo Beltrocco
Foto
Photography ID: 463547
  Adult

Santo Tomé
Santa Fe
Argentina
04/06/2017
Eduardo Beltrocco
Foto
Photography ID: 447092
  Adult

Santo Tomé
Santa Fe
Argentina
12/19/2011
Eduardo Beltrocco
Foto
Photography ID: 444580
  Adult

Santo Tomé
Santa Fe
Argentina
05/01/2021
Eduardo Beltrocco
Foto
Photography ID: 422233
  Adult

Santo Tomé
Santa Fe
Argentina
11/22/2020
Jorge Schlemmer
Foto
Photography ID: 420735
  Adult

Santo Tomé
Santa Fe
Argentina
05/30/2020
Eduardo Beltrocco
Foto
Photography ID: 420718
♂ ♀
  Adult

Santo Tomé
Santa Fe
Argentina
05/09/2020
Eduardo Beltrocco
Foto
Photography ID: 419799
  Adult

Santo Tomé
Santa Fe
Argentina
01/06/2020
Eduardo Beltrocco
Foto
Photography ID: 416849
  Adult

Santo Tomé
Santa Fe
Argentina
08/09/2020
Eduardo Beltrocco
Foto
Photography ID: 394481
♂ ♀
  Adult

Santo Tomé
Santa Fe
Argentina
12/19/2019
Eduardo Beltrocco
Foto
Photography ID: 393578
♂ ♀
  Adult

Santo Tomé
Santa Fe
Argentina
03/25/2018
Eduardo Beltrocco
Foto
Photography ID: 331288
  Adult

Santo Tomé
Santa Fe
Argentina
04/21/2019
Eduardo Beltrocco



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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
221500218/11/2024ArgentinaSanta FeArea Natural Protegida Laguna Juan de Garay (ex Bedetti), Santo Tomé1Patricia Beatriz Benitez
194628713/01/2024ArgentinaSanta FeLa Rioja 1109, Santo Tomé1Gustavo Fernando Durán
193581831/12/2023ArgentinaSanta FeAvenida Ejercito Argentino 2590, Santo Tomé1Gustavo Fernando Durán
190173221/10/2023ArgentinaSanta FeAvenida Ejercito Argentino, Santo Tomé1Gustavo Fernando Durán
191164317/10/2023ArgentinaSanta FeAcceso Norte (antes de Autopista), Santo ToméHernán Tolosa
182657916/09/2023ArgentinaSanta FeLa Rioja 1109, Santo Tomé1Gustavo Fernando Durán
172482419/02/2023ArgentinaSanta FeMitre 2768, Santo Tomé1Gustavo Fernando Durán
172479419/02/2023ArgentinaSanta FeAvenida Ejercito Argentino 2518, Santo Tomé2Gustavo Fernando Durán
166483930/10/2022ArgentinaSanta FeArea Natural Protegida Laguna Juan de Garay (ex Bedetti), Santo Tomé1Gustavo Fernando Durán
165504902/10/2022ArgentinaSanta FeAvenida Ejercito Argentino 1189, Santo ToméGustavo Fernando Durán
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.