Tyrant-flycatchers (Tyrannidae)
Cattle Tyrant (Machetornis rixosa) - HBW 9, p. 405
French: Moucherolle querelleur
German: Graslandtyrann
Spanish: Picabuey
Taxonomy: Tyrannus rixosus Vieillot, 1819, Paraguay.
Affinities uncertain; molecular and anatomical evidence suggests that superficial resemblance to Tyrannus is due to convergence. Race obscurodorsalis possibly better merged with flavigularis; overlaps with latter in Venezuela and does not appear to be evolutionarily distinct; closer examination necessary. Also, some specimens of nominate from NE Brazil (Piauí) closely approach flavigularis. Three subspecies currently recognized.
Subspecies and Distribution:
- flavigularis Todd, 1912 - E Panama, N & E Colombia (N Chocó and upper R Sinú E to Guajira, S to S Bolívar) and N Venezuela (E to Guárico, W Anzoátegui and Delta Amacuro, S to N Bolívar).
- obscurodorsalis Phelps, Sr & Phelps, Jr, 1948 - SW Venezuela (Barinas, W Apure and S Cojedes), E Colombia E of Andes (Norte de Santander S to S Meta and Vichada) and E Ecuador.
- rixosa (Vieillot, 1819) - E & S Brazil (extreme NE Pará E to Rio Grande do Norte, and S to Rio Grande do Sul, also S from S Mato Grosso and Goiás), N & E Bolivia (Beni and Santa Cruz S to Tarija), Paraguay, most of N Argentina (S to San Luis, Córdoba and SW Buenos Aires) and Uruguay.
- Least Concern Enlarge map
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A bird perched on a capibara. Locality Trinidad, Beni Department, Bolivia (ssp rixosa)
Josep del Hoyo 6 September 2005 6 years ago 21 sec 4.8 -
A bird on the ground and flying away Locality Pousada Aguapé, Pantanal, Mato Grosso do Sul State, Brazil (ssp rixosa)
Josep del Hoyo 9 January 2005 5 years ago 34 sec 4.7 -
An adult feeding a fledgling and the two birds foraging. Locality Girardot, Cundinamarca Department, Colombia
Pere Sugranyes 9 July 2010 2 years ago 54 sec 4.5 -
A bird foraging on the grass Locality Girardot, Cundinamarca Department, Colombia (ssp obscurodorsalis)
Pere Sugranyes 31 October 2006 5 years ago 15 sec 4.5 -
Bird foraging on vegetation removed from the lagoon. Locality Laguna del Diario, Maldonado, Maldonado Department, Uruguay
Antonio Silveira 20 April 2013 8 weeks ago 24 sec 4 -
A bird near water, sings or calls Locality Guapi Açu Ecological Reserve (REGUA), Rio de Janeiro State, Brazil
Juan Sanabria 1 November 2011 1 year ago 39 sec 4
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Foraging along Transpantaneira
Locality Pantanal, Mato Grosso State, Brazil
Ian Barker 9 June 2010 2 years ago 4.3 -
A bird on the ground
Locality Costanera Sur Ecological Reserve, Buenos Aires, Buenos Aires Province, Argentina
Roberto Pujana 20 April 2013 8 weeks ago 4 -
Lateral view of an adult.
Locality Nova Friburgo, Rio de Janeiro State, Brazil (ssp rixosa)
Ken Havard 16 November 2012 20 weeks ago 4 -
bird on open savannah area
Locality Hato El Cedral, Apure State, Venezuela
Thore Noernberg 4 December 2011 30 weeks ago 4 -
Single bird on a lawn
Locality Pantanal, Brazil
Tomas Grim 10 July 2009 37 weeks ago 4 -
A bird perched on a wire.
Locality Esteros del Iberá, Corrientes Province, Argentina (ssp rixosa)
Carmelo López 30 October 2011 1 year ago 4
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An individual sings from rocks on the upper beach Locality Punta del Este, Maldonado Department, Uruguay
(ssp rixosa)
Joe Angseesing 26 February 2008 3 years ago 3.5 -
Click to play
Bird singing perched on a palm. Locality Bonito, Pantanal, Mato Grosso do Sul State, Brazil
Antonio Silveira 12 May 2005 44 weeks ago 0
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