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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 Rosario

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: 629231
  Adult

Rosario
Santa Fe
Argentina
04/02/2025
Peter Vidana
Foto
Photography ID: 537097
  Adult

Rosario
Santa Fe
Argentina
06/04/2023
Miguel Angel Fernández
Foto
Photography ID: 516582
  Adult

Rosario
Santa Fe
Argentina
12/02/2022
Tramannoni Ariel
Foto
Photography ID: 401443
 
Rosario
Santa Fe
Argentina
06/20/2020
Lotfi Si Saber
Foto
Photography ID: 267653
  Adult

Rosario
Santa Fe
Argentina
06/01/2018
Andrés Cecconi
Foto
Photography ID: 266763
  Adult

Rosario
Santa Fe
Argentina
05/07/2018
Andrés Cecconi
Foto
Photography ID: 266698
  Adult

Rosario
Santa Fe
Argentina
05/27/2018
Andrés Cecconi
Foto
Photography ID: 255766
  Adult

Rosario
Santa Fe
Argentina
03/08/2018
Andrés Cecconi
Foto
Photography ID: 31278
  Adult

Rosario
Santa Fe
Argentina
01/01/2014
Valerita Sur



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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
228350105/05/2025ArgentinaSanta FeMonumento a la Bandera, RosarioAdrian Braidotti
226937502/04/2025ArgentinaSanta FeParque Urquiza, RosarioPeter Vidana
226102810/03/202518:11ArgentinaSanta FeAvenida de la Costa Estanislao López 2002-2100, Rosario2Santiago Juan Torres
197768624/02/2024ArgentinaSanta FeRosario1Gustavo Fernando Durán
211832221/07/2023ArgentinaSanta FeAvenida de la Costa Estanislao López 2002-2100, RosarioGisela Ballent
179593321/07/2023ArgentinaSanta FeAvenida de la Costa Estanislao López 2002-2100, RosarioSantiago Juan Torres
177552704/06/2023ArgentinaSanta FeBosque de los Constituyentes, RosarioMiguel Angel Fernández
168170902/12/2022ArgentinaSanta FeParque de la Independencia, RosarioTramannoni Ariel
146912929/09/2021ArgentinaSanta FeRosarioLeonardo Caballero
146794926/09/2021ArgentinaSanta FeBosque de los Constituyentes, RosarioLeonardo Caballero
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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