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Species icon
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: 478800
  Egg

Funes
Santa Fe
Argentina
12/11/2021
Max Uranga
Foto
Photography ID: 478799
  Egg

Funes
Santa Fe
Argentina
12/11/2021
Max Uranga
Foto
Photography ID: 430017
  Adult

Estancia Rincón del Socorro
Corrientes
Argentina
12/18/2020
Max Uranga
Foto
Photography ID: 367891
  Egg

Funes
Santa Fe
Argentina
10/14/2019
Max Uranga
Foto
Photography ID: 367889
  Egg

Funes
Santa Fe
Argentina
10/14/2019
Max Uranga
Foto
Photography ID: 304370
  Adult

Esteros del Iberá
Corrientes
Argentina
10/28/2018
Max Uranga
Foto
Photography ID: 303714
  Adult

Parque Nacional Iberá
Corrientes
Argentina
10/27/2018
Max Uranga
Foto
Photography ID: 303713
  Adult

Parque Nacional Iberá
Corrientes
Argentina
10/27/2018
Max Uranga
Foto
Photography ID: 291505
  Adult

Desaguadero
San Luis
Argentina
08/15/2018
Max Uranga
Foto
Photography ID: 274477
  Adult

Punta del Este
Maldonado
Uruguay
01/06/2018
Max Uranga
Foto
Photography ID: 240009
  Adult

Colonia Carlos Pellegrini
Corrientes
Argentina
11/26/2017
Max Uranga
Foto
Photography ID: 218607
  Adult

Termas de Reyes
Jujuy
Argentina
07/17/2017
Max Uranga



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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
153334611/12/2021ArgentinaSanta FeKentucky Club de Campo, FunesMax Uranga
135176818/12/2020ArgentinaCorrientesCasco y alrededores, Estancia Rincón del SocorroMax Uranga
114754414/10/2019ArgentinaSanta FeKentucky Club de Campo, FunesMax Uranga
85467628/10/2018ArgentinaCorrientesSan Alonso, Esteros del IberáMax Uranga
85354127/10/2018ArgentinaCorrientesPortal San Nicolás, Parque Nacional IberáMax Uranga
81861715/08/2018ArgentinaSan LuisYpf Desaguadero, DesaguaderoMax Uranga
77629706/01/2018UruguayMaldonadoCostas de la punta, Punta del EsteMax Uranga
67574426/11/2017ArgentinaCorrientesColonia Carlos PellegriniMax Uranga
61326117/07/2017ArgentinaJujuyHotel Termas y alrededores, Termas de ReyesMax Uranga
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.