The Guianan Gnatcatcher (Polioptila guianensis) is a species of bird

Bird

Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...

 in the Polioptilidae family. It is found in the canopy in the Amazon Rainforest

Amazon Rainforest

The Amazon Rainforest , also known in English as Amazonia or the Amazon Jungle, is a moist broadleaf forest that covers most of the Amazon Basin of South America...

. This relatively plain gnatcatcher

Gnatcatcher

The 15-20 species of small passerine birds in the gnatcatcher family occur in North and South America . Most species of this mainly tropical and subtropical group are resident, but the Blue-gray Gnatcatcher of the USA and southern Canada migrates south in winter...

 includes three subspecies

Subspecies

Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

, each sometimes considered a species:

• Guianan Gnatcatcher, Polioptila (guianensis) guianensis, from the Guianas and north-eastern Brazil
  Brazil
  Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...
  
   (north of the Amazon River
  Amazon River
  The Amazon of South America is the second longest river in the world and by far the largest by waterflow with an average discharge greater than the next seven largest rivers combined...
  
   and east of the Branco River
  Branco River
  The Rio Branco is the principal affluent of the Rio Negro from the north; it is enriched by many streams from the sierras which separate Venezuela and Guyana from Brazil. Its two upper main tributaries are the Urariquira and the Takutu...
  
  ).
• Rio Negro Gnatcatcher, Poliptila (guianensis) facilis, from southern 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...
  
   and north-western Brazil (north of the Amazon River and west of the Branco River).
• Para Gnatcatcher, Polioptila (guianensis) paraensis, from the southern Amazon in Brazil (south of the Amazon River).

Additionally, the highly threatened Iquitos Gnatcatcher

Iquitos Gnatcatcher

The Iquitos Gnatcatcher Polioptila clementsi is a gnatcatcher described as new to science in 2005. It is currently only known from the Allpahuayo-Mishana National Reserve, west of Iquitos, Peru. The species is a member of the Polioptila guianensis complex. It is named after James F....

is associated with this group, though all major authorities recognized it as a separate species.