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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 Ensenada

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: 668084
  Adult

Ensenada
Buenos Aires
Argentina
01/17/2026
Walter Omar Buffarini
Foto
Photography ID: 520091
  Juvenile

Ensenada
Buenos Aires
Argentina
12/15/2022
Patricia Gabriela Mancilla Iglesias
Foto
Photography ID: 478740
  Adult

Ensenada
Buenos Aires
Argentina
03/22/2014
Walter Omar Buffarini
Foto
Photography ID: 397388
  Adult

Ensenada
Buenos Aires
Argentina
04/03/2015
Enrique Sanz
Foto
Photography ID: 271238
  Adult

Ensenada
Buenos Aires
Argentina
06/20/2018
Gustavo Adolfo Herrera
Foto
Photography ID: 240223
  Adult

Ensenada
Buenos Aires
Argentina
03/22/2015
Lucas Sanz
Foto
Photography ID: 211412
  Adult

Ensenada
Buenos Aires
Argentina
07/22/2017
Gustavo Adolfo Herrera
Foto
Photography ID: 135620
  Adult

Ensenada
Buenos Aires
Argentina
01/22/2016
Diego Varales
Foto
Photography ID: 101765
  Adult

Ensenada
Buenos Aires
Argentina
06/08/2015
Diego Varales
Foto
Photography ID: 63155
  Adult

Ensenada
Buenos Aires
Argentina
09/28/2014
Diego Varales
Foto
Photography ID: 16723
  Adult

Ensenada
Buenos Aires
Argentina
03/30/2012
Diego Varales



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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
241757117/01/2026ArgentinaBuenos AiresVilla del Plata, EnsenadaWalter Omar Buffarini
241556404/01/2026ArgentinaBuenos AiresEl Dique, Ensenada1Diego Varales
241346016/12/2025ArgentinaBuenos AiresFuerte Barragán, Ensenada1Gabriel Carbajales
239939514/12/2025ArgentinaBuenos Aires-34.83618, -57.92581, Ensenada1Pablo Richter
242525101/11/2025ArgentinaBuenos AiresCalle 50 700–798,, Ensenada1Pablo Richter
242504701/11/2025ArgentinaBuenos AiresLaguna de los Patos, Ensenada1Pablo Richter
236066807/09/2025ArgentinaBuenos AiresEl Dique, Ensenada2Julian Uriel Collado
234868026/08/2025ArgentinaBuenos AiresLaguna de los Patos, EnsenadaWalter Liriel Gómez Umpierrez
236238803/08/2025ArgentinaBuenos AiresLaguna de los Patos, Ensenada1Pablo Richter
232663327/07/202511:59ArgentinaBuenos AiresEnsenada1Jorge La Grotteria
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.