Riparian Antbird

The riparian antbird (Cercomacroides fuscicauda) is a species of passerine bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Bolivia, Brazil, Colombia, Ecuador, and Peru. == Taxonomy and systematics == The riparian antbird was described as a subspecies of the blackish antbird (at the time Cercomacra nigrescens, now Cercomacroides nigriscens). Significant vocal differences between it and the other five subspecies showed it to be a full species. A molecular phylogenetic study published in 2014 found that Cercomacra, as then defined, was polyphyletic. The genus was split to create two monophyletic genera, and six species including the riparian antbird were moved to the newly erected genus Cercomacroides. The riparian antbird is monotypic. == Description == The riparian antbird is 14 to 15 cm (5.5 to 5.9 in) long. Males are almost entirely dark gray, though a slightly lighter gray on their underparts. They have a mostly concealed white patch between their scapulars, a small white patch on the scapulars, and narrow white tips on their wing coverts. Females have a rufous-tinged tawny crown; their upperparts and wings are brownish olive with a small white interscapular patch. Their forehead and face are orange-tawny. Their tail is gray…