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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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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: 680208
  Adult

Rosario
Santa Fe
Argentina
03/29/2026
Peter Vidana
Foto
Photography ID: 679761
  Adult

La Emilia
Buenos Aires
Argentina
03/22/2026
Peter Vidana
Foto
Photography ID: 669379
  Adult

Luis Palacios
Santa Fe
Argentina
01/18/2026
Peter Vidana
Foto
Photography ID: 663090
  Adult

Diamante
Entre Ríos
Argentina
11/22/2025
Peter Vidana
Foto
Photography ID: 662333
  Adult

Corrientes capital
Corrientes
Argentina
11/12/2025
Peter Vidana
Foto
Photography ID: 661441
  Adult

Parque Nacional Mburucuyá
Corrientes
Argentina
11/10/2025
Peter Vidana
Foto
Photography ID: 661168
  Adult

Mburucuyá (localidad)
Corrientes
Argentina
11/09/2025
Peter Vidana
Foto
Photography ID: 660572
  Adult

Esquina
Corrientes
Argentina
11/09/2025
Peter Vidana
Foto
Photography ID: 649591
  Adult

Parque Nacional El Palmar
Entre Ríos
Argentina
08/27/2025
Peter Vidana
Foto
Photography ID: 644971
  Adult

Isla del Cerrito
Chaco
Argentina
07/14/2025
Peter Vidana
Foto
Photography ID: 642319
  Adult

San Nicolás de los Arroyos
Buenos Aires
Argentina
07/04/2025
Peter Vidana



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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
245383429/03/2026ArgentinaSanta FeParque España, RosarioPeter Vidana
245296522/03/2026ArgentinaBuenos AiresLa EmiliaPeter Vidana
242083018/01/2026ArgentinaSanta FeReserva natural Carancho Diablo, Luis PalaciosPeter Vidana
240014422/11/2025ArgentinaEntre RíosBalneario Camping Diamante, DiamantePeter Vidana
239906915/11/2025ArgentinaCorrientesPortal San Antonio - Parque Provincial IberáPeter Vidana
239724212/11/2025ArgentinaCorrientesCostanera Sur, Corrientes capitalPeter Vidana
239534410/11/2025ArgentinaCorrientesSendero yatay, Parque Nacional MburucuyáPeter Vidana
239335109/11/2025ArgentinaCorrientesCañada Fragosa, Mburucuyá (localidad)Peter Vidana
239070409/11/2025ArgentinaCorrientesRío Guaiquiraró, EsquinaPeter Vidana
234950827/08/2025ArgentinaEntre RíosSendero Tres Cruces, Parque Nacional El PalmarPeter Vidana
Page 1

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Citation recommended:

EcoRegistros. 2026. Cattle Tyrant (Machetornis rixosa) - Species sheet. Acceded from https://www.ecoregistros.org on 05/04/2026.