Cattle tyrant

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Cattle tyrant
Machetornis rixosa -Parque del Este, Caracas, Venezuela-8.jpg
In Venezuela
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Tyrannidae
Genus: Machetornis
G.R. Gray, 1841
Species: M. rixosa
Binomial name
Machetornis rixosa
(Vieillot, 1819)

Machetornis rixosus (Vieillot, 1819) [2]

The cattle tyrant (Machetornis rixosa) is a species of bird in the family Tyrannidae. It is the only member of the genus Machetornis.

It is found in Argentina, Bolivia, Brazil, Colombia, Ecuador, Panama, Paraguay, Uruguay, and Venezuela.


Its natural habitats are pastureland and heavily degraded former forest. Due to deforestation, the species has recently colonized areas where it was previously absent, such as northeast Ecuador.

Cattle tyrants feed on parasitic arthropods on mammals, an example of a cleaning symbiosis.

Cleaning symbiosis: cattle tyrant feeding on parasites of a capybara


  1. ^ BirdLife International (2012). "Machetornis rixosa". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013. 
  2. ^ Alan P. Peterson, M.D. "Machetornis rixosus". Integrated Taxonomic Information System. Retrieved 22 July 2011.