The riparian antbird (''Cercomacroides fuscicauda'') is a species of passerine bird in the family Thamnophilidae. It is found in southern

Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...

, eastern Ecuador, eastern Peru, northern

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

and southwestern Amazonian Brazil. Its natural habitats are subtropical or tropical moist lowland forests, and adjacent thickets on sandbars and riverbanks. The riparian antbird used to be considered conspecific with the

blackish antbird The blackish antbird (''Cercomacroides nigrescens'') is a species of passerine bird in the family Thamnophilidae. It is found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, and Suriname. Its natural habitats are subtropical or tropic ...

but the two taxa were split based their different vocalization. The riparian antbird was formerly included in the genus ''

Cercomacra ''Cercomacra'' is a genus of passerine birds in the family Thamnophilidae. The genus was erected by the English zoologist Philip Sclater in 1858. The type species was subsequently designated as the Rio de Janeiro antbird. The genus contains se ...

''. A

molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

study published in 2014 found that ''Cercomacra'', as then defined, was polyphyletic. The genus was split to create two

monophyletic In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic gro ...

genera and six species including the riparian antbird were moved to the newly erected genus ''

Cercomacroides ''Cercomacroides'' is a genus of passerine birds in the family Thamnophilidae. The genus contains six species: * Willis's antbird (''Cercomacroides laeta'') * Parker's antbird (''Cercomacroides parkeri'') * Blackish antbird (''Cercomacroides ...

''.

References

riparian antbird Birds of the Amazon Basin Birds of the Ecuadorian Amazon Birds of the Peruvian Amazon Birds of the Bolivian Amazon riparian antbird riparian antbird {{Thamnophilidae-stub