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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 Bahía Blanca

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: 568200
  Adult

Bahía Blanca
Buenos Aires
Argentina
01/12/2024
Lucas Martín
Foto
Photography ID: 538719
  Adult

Bahía Blanca
Buenos Aires
Argentina
06/16/2023
Lucas Martín
Foto
Photography ID: 507086
  Adult

Bahía Blanca
Buenos Aires
Argentina
09/08/2022
Lucas Martín
Foto
Photography ID: 451487
  Adult

Bahía Blanca
Buenos Aires
Argentina
06/18/2021
Lucas Martín
Foto
Photography ID: 451125
  Adult

Bahía Blanca
Buenos Aires
Argentina
06/20/2021
Diego Hernán Pérez
Foto
Photography ID: 336689
♂ ♀
  Adult

Bahía Blanca
Buenos Aires
Argentina
06/12/2019
Diego Hernán Pérez
Foto
Photography ID: 335806
  Adult

Bahía Blanca
Buenos Aires
Argentina
06/05/2019
Diego Hernán Pérez
Foto
Photography ID: 333852
  Adult

Bahía Blanca
Buenos Aires
Argentina
08/06/2018
Fernando Naifleisch
Foto
Photography ID: 332161
  Adult

Bahía Blanca
Buenos Aires
Argentina
05/01/2019
Zulima América Schupbach
Foto
Photography ID: 331687
  Adult

Bahía Blanca
Buenos Aires
Argentina
05/01/2019
Zulima América Schupbach
Foto
Photography ID: 331686
  Adult

Bahía Blanca
Buenos Aires
Argentina
05/01/2019
Zulima América Schupbach
Foto
Photography ID: 281860
  Adult

Bahía Blanca
Buenos Aires
Argentina
08/18/2018
Diego Hernán Pérez



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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
196304512/01/2024ArgentinaBuenos AiresBahía BlancaLucas Martín
178309220/06/2023ArgentinaBuenos AiresEl Caldén 6855, Bahía BlancaGisela Ballent
178070920/06/2023ArgentinaBuenos AiresEl Caldén 6855, Bahía BlancaSantiago Juan Torres
178061316/06/2023ArgentinaBuenos AiresPredio Conicet, Bahía BlancaLucas Martín
163763708/09/2022ArgentinaBuenos AiresBahía BlancaLucas Martín
163338230/08/2022ArgentinaBuenos AiresPredio Conicet, Bahía Blanca1Lucas Martín
141873020/06/2021ArgentinaBuenos AiresBarrio La Huella, Bahía BlancaDiego Hernán Pérez
142006418/06/2021ArgentinaBuenos AiresZona Ruta 35 - Acceso a Bahia, Bahía BlancaLucas Martín
93259912/06/2019ArgentinaBuenos AiresParque de la Ciudad, Bahía BlancaDiego Hernán Pérez
93067005/06/2019ArgentinaBuenos AiresParque de mayo, Bahía BlancaDiego Hernán Pérez
Page 1

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Citation recommended:

EcoRegistros. 2026. Cattle Tyrant (Machetornis rixosa) - Species sheet. Acceded from https://www.ecoregistros.org on 15/03/2026.