The Inambari gnatcatcher (''Polioptila attenboroughi'') is a species of bird in the family Polioptilidae. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

Taxonomy and systematics

The Inambari gnatcatcher was described as a new species in 2013.Whittaker, A., Aleixo, A., Whitney, B.M., Smith, B.T. and Klicka, J. (2013). A distinctive new species of gnatcatcher in the ''Polioptila guianensis'' complex (Aves: Polioptilidae) from western Amazonian Brazil. Pp. 301–305 in: del Hoyo, J., Elliott, A., Sargatal, J. & Christie, D.A. eds. (2013). Handbook of the Birds of the World. Special Volume: New Species and Global Index. Lynx Edicions, Barcelona The South American Classification Committee of the

American Ornithological Society The American Ornithological Society (AOS) is an ornithological organization based in the United States. The society was formed in October 2016 by the merger of the American Ornithologists' Union (AOU) and the Cooper Ornithological Society. Its ...

(SACC/AOS), the

International Ornithological Committee The International Ornithologists' Union (IOU) is an international organization for the promotion of ornithology. It links basic and applied research and nurtures education and outreach activities. Specifically, the IOU organizes and funds global co ...

(IOC), and the

Clements taxonomy ''The Clements Checklist of Birds of the World'' is a book by Jim Clements which presents a list of the bird species of the world. The most recent printed version is the sixth edition (2007), but has been updated yearly, the last version in 202 ...

accepted it as a distinct species beginning in mid-2019.Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 23 May 2021. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved May 24, 2021Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ Retrieved August 15, 2019 It had earlier been treated as a subspecies of the Guianan gnatcatcher (''Polioptila guianensis''), and

BirdLife International BirdLife International is a global partnership of non-governmental organizations that strives to conserve birds and their habitats. BirdLife International's priorities include preventing extinction of bird species, identifying and safeguarding i ...

(BLI) retains it there as of December 2020.HBW and BirdLife International (2020) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 5. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v5_Dec20.zip xls zipped 1 MBretrieved May 27, 2021 The Inambari gnatcatcher is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

Description

The

holotype A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of s ...

Inambari gnatcatcher, an adult male, weighed . Its head, nape, and neck are a uniform plumbeous gray. The throat, breast, upper belly, and flanks are also plumbeous gray, palest near the bill. The lower belly is white. It has a broken white eye ring. The innermost feathers of its tail are black and the outermost approximately 80% white, with those between intergrading.

Distribution and habitat

The Inambari gnatcatcher's full range is not known. All of the few records are from the Brazilian central

Amazon Basin The Amazon basin is the part of South America drained by the Amazon River and its tributary, tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries ...

south of the Rio Solimões (the Upper

Amazon Amazon most often refers to: * Amazon River, in South America * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon (company), an American multinational technology company * Amazons, a tribe of female warriors in Greek myth ...

) and west of the Rio Madeira. The region is called the Inambari area of endemism. "So far as is known, Inambari Gnatcatcher inhabits the canopy of tall, humid, upland sandy-soil forest" at less than of elevation.Greeney, H. F., J. L. Atwood, S. B. Lerman, and G. M. Kirwan (2020). Inambari Gnatcatcher (''Polioptila attenboroughi''), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.inagna1.01 retrieved May 29, 2021

Behavior

Feeding

The details of the Inambari gnatcatcher's diet is unknown but it is probably small invertebrates like that of other ''Polioptila'' gnatcatchers. It forages alone or in pairs and seems to always associate with

mixed-species foraging flock A mixed-species feeding flock, also termed a mixed-species foraging flock, mixed hunting party or informally bird wave, is a flock (birds), flock of usually insectivorous birds of different species that join each other and move together while fora ...

s. It mostly gleans prey from foliage but also sallies out to catch flying insects.

Breeding

"The nest, eggs, and breeding biology of Inambari Gnatcatcher are completely unknown."

Vocalization

The Inambari gnatcatcher's loudsong is "an evenly paced series of six notes at a nearly level frequency

It also has a more complex song.

Status

The

IUCN The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status ...

has not assessed the Inambari gnatcatcher. "The recent advancement of soybean plantations and general infrastructure along the BR-319 highway linking Manaus to Porto Velho in Brazil, which bisects the known range of Inambari Gnatcatcher, is a clear threat to this species."

References

{{Taxonbar, from=Q18560082 Inambari gnatcatcher Birds of the Brazilian Amazon Birds of Southern Amazonia Endemic birds of Brazil Inambari gnatcatcher Inambari gnatcatcher