| Rio Negro gnatcatcher | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Polioptilidae |
| Genus: | Polioptila |
| Species: | P. facilis |
| Binomial name | |
| Polioptila facilis Zimmer, J.T., 1942 | |
 | |
The Rio Negro gnatcatcher (Polioptila facilis) is a species of bird in the family Polioptilidae. It is endemic to Brazil. [1]
The Rio Negro gnatcatcher is monotypic. It was formerly treated as a subspecies of the Guianan gnatcatcher (Polioptila guianensis) but since mid-2019 has been considered a separate species based on significant differences in morphology and vocalization. [2] [3] [4]
The Rio Negro gnatcatcher is 10 to 11 cm (3.9 to 4.3 in) long and weighs 6 to 7 g (0.21 to 0.25 oz). The male's head, breast, and back are bluish gray and its belly white with minimal contrast between the two colors. The innermost feathers of its tail are black and the outermost white, with those between intergrading. The female is similar but paler. [5]
The Rio Negro gnatcatcher is found in northern Amazonas state in Brazil and the immediately adjacent parts of southern Venezuela and eastern Colombia. Much of its range is drained by the Rio Negro, a blackwater tributary of the Amazon River. It inhabits the borders and canopy of humid primary forest, mostly below 500 m (1,600 ft) elevation. [5]
The Rio Negro gnatcatcher's diet is little known but is assumed to be arthropods like that of other Polioptila gnatcatchers. It actively forages, usually as part of mixed-species flocks. [5]
The Rio Negro gnatcatcher's breeding phenology has not been documented. [5]
The Rio Negro gnatcatcher's song is repeated high notes . [5]
The IUCN has not assessed the Rio Negro gnatcatcher. "The species’ ecoregion of primary occurrence...[is] not considered to be at any serious risk". [5]
The 21 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-grey gnatcatcher of the United States and southern Canada migrates south in winter. They are close relatives of the wrens.
The Iquitos gnatcatcher is a bird in the family Polioptilidae. It was first described in 2005. It is known only from the Allpahuayo-Mishana National Reserve, west of Iquitos, Peru.
The little chachalaca is a bird in the family Cracidae, the chachalacas, guans, and curassows. It is found in Brazil, French Guiana, Suriname, Guyana, Venezuela and possibly Colombia.
The black-fronted piping guan or jacutinga in Brazilian Portuguese is a bird in the chachalaca, guan, and curassow family Cracidae. It is found in Argentina, Brazil, and Paraguay.
The black-capped gnatcatcher is a small songbird in the family Polioptilidae. It is found in Mexico and the United States.
The razor-billed curassow is a species of bird in the family Cracidae, the chachalacas, guans, and curassows. It is found in Bolivia, Brazil, Colombia, and Peru.
The white-lored gnatcatcher is a species of bird in the family Polioptilidae. It is found in Costa Rica, El Salvador, Guatemala, Honduras, Mexico, and Nicaragua.
Polioptila is a genus of small insectivorous birds in the family Polioptilidae. They are found in North and South America.
The masked gnatcatcher is a small songbird in the family Polioptilidae. It is found in Argentina, Bolivia, Brazil, Paraguay, and Uruguay.
The Guianan gnatcatcher is a species of bird in the family Polioptilidae. It is found in Brazil, French Guiana, Guyana, Suriname, and Venezuela.
The creamy-bellied gnatcatcher is a species of bird in the family Polioptilidae. It is found in Argentina, Brazil, and Paraguay.
The Cuban gnatcatcher is a species of bird in the family Polioptilidae, the gnatcatchers. It is endemic to Cuba.
The slate-throated gnatcatcher is a species of bird in the family Polioptilidae. It is found in Colombia, Ecuador, and Panama.
The Amazonian royal flycatcher is a passerine bird in the family Tityridae according to the International Ornithological Committee (IOC). It is found in throughout most of the Amazon basin in northern Bolivia, eastern Peru, eastern Ecuador, eastern Colombia, Venezuela, the Guianas, and northern and western Brazil.
The white-browed gnatcatcher is a species of bird in the gnatcatcher family Polioptilidae. It is native to central and South America.
The East Brazilian chachalaca is a species of bird in the family Cracidae, the chachalacas, guans, and curassows. It is endemic to eastern Brazil.
The chestnut-headed chachalaca is a bird in the family Cracidae, the chachalacas, guans, and curassows. It is endemic to Brazil.
The Para gnatcatcher or Klages's gnatcatcher, is a species of bird in the family Polioptilidae. It is endemic to Brazil.
The Inambari gnatcatcher is a species of bird in the family Polioptilidae. It is endemic to Brazil.
The Yucatan gnatcatcher is a species of bird in the family Polioptilidae. It is endemic to the Yucatán Peninsula in Mexico.