Stigmatura
Encyclopedia
The wagtail-tyrants are a genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

, Stigmatura, of small South America
South America
South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

n birds in the Tyrannidae family. They are yellow below and have long black-and-white tails that frequently are held cocked.

Species

The two described species are sometimes split into two species each (i.e., resulting in a total of four species). Additionally, a possibly undescribed species is found in the Orinoco Basin
Orinoco
The Orinoco is one of the longest rivers in South America at . Its drainage basin, sometimes called the Orinoquia, covers , with 76.3% of it in Venezuela and the remainder in Colombia...

 in Venezuela
Venezuela
Venezuela , officially called the Bolivarian Republic of Venezuela , is a tropical country on the northern coast of South America. It borders Colombia to the west, Guyana to the east, and Brazil to the south...

.
  • Lesser Wagtail-tyrant
    Lesser Wagtail-tyrant
    The Lesser Wagtail-tyrant is a small South American species of bird in the Tyrannidae family. It occurs in two distinct populations: One found in wooded and shrubby habitats along major Amazonian rivers in Brazil, Peru, Ecuador and Colombia, and a second found in the comparable far drier...

     (Stigmatura napensis)
    • Bahia Wagtail-tyrant (Stigmatura (napensis) bahiae)
  • Greater Wagtail-tyrant
    Greater Wagtail-tyrant
    The Greater Wagtail-tyrant is a South American species of bird in the Tyrannidae family. A small bird, but larger than the related Lesser Wagtail-tyrant...

     (Stigmatura budytoides)
    • Caatinga Wagtail-tyrant (Stigmatura (budytoides) gracilis)
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