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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 Mar Chiquita

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: 604528
  Adult

Mar Chiquita
Buenos Aires
Argentina
06/16/2024
José Luis Ianiro
Foto
Photography ID: 601006
  Adult

Mar Chiquita
Buenos Aires
Argentina
09/08/2024
Celina Emilia Iratchet
Foto
Photography ID: 540775
  Adult

Mar Chiquita
Buenos Aires
Argentina
07/01/2023
José Luis Ianiro
Foto
Photography ID: 221115
  Adult

Mar Chiquita
Buenos Aires
Argentina
09/17/2017
Victor Hugo Michelini
Foto
Photography ID: 107493
  Juvenile

Mar Chiquita
Buenos Aires
Argentina
07/07/2015
Marcelo Daniel Ottaviani
Foto
Photography ID: 42877
  Adult

Mar Chiquita
Buenos Aires
Argentina
08/17/2013
Roberto Vañecek



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 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
242981229/01/2026ArgentinaBuenos AiresLaguna Mar Chiquita, Mar Chiquita1Victor Hugo Michelini
238360701/11/2025ArgentinaBuenos AiresEstancia Nahuel Ruca, Mar Chiquita1Victor Hugo Michelini
238007518/10/2025ArgentinaBuenos AiresEstancia Nahuel Ruca, Mar Chiquita1Victor Hugo Michelini
237799704/10/2025ArgentinaBuenos AiresEstancia Nahuel Ruca, Mar Chiquita2Victor Hugo Michelini
230888407/06/2025ArgentinaBuenos AiresLaguna Nahuel Ruca, Mar Chiquita1Victor Hugo Michelini
221302012/10/2024ArgentinaBuenos AiresAlbúfera de Mar Chiquita, Mar Chiquita1Victor Hugo Michelini
215478708/09/2024ArgentinaBuenos AiresEstancia Nahuel Ruca, Mar ChiquitaCelina Emilia Iratchet
216871916/06/2024ArgentinaBuenos AiresEstancia Nahuel Ruca, Mar ChiquitaJosé Luis Ianiro
178839201/07/2023ArgentinaBuenos AiresCamino a Vivoratá, Mar Chiquita1José Luis Ianiro
178540001/07/2023ArgentinaBuenos AiresEstancia Nahuel Ruca, Mar Chiquita2Victor Hugo Michelini
Page 1

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Citation recommended:

EcoRegistros. 2026. Cattle Tyrant (Machetornis rixosa) - Species sheet. Acceded from https://www.ecoregistros.org on 13/03/2026.