Family Typical Antbirds (Thamnophilidae)

Least Concern

Riparian Antbird (Cercomacroides fuscicauda)


French: Grisin riverain German: Flussufer-Ameisenfänger Spanish: Hormiguero ribereño

Cercomacra nigrescens fuscicauda

J. T. Zimmer

, 1931,

Lagarto, upper Río Ucayali, Peru


Recently split from C. nigrescens on account of its strong vocal distinctiveness#R; differs in its (in female) paler, duller ochraceous overall colour (1); tawny-washed crown, producing a less contrasting facial pattern (1); greyer flanks (1); more clearly marked wing-coverts (ns[1]); and (in male) song with much faster pace (from published data#R effect size vs next fastest 11.4, score 4) and many more notes (effect size vs next most numerous 3.7, score 2)#R. In addition, C. fuscicauda is confined to riparian habitats, although C. nigrescens, which occurs in other habitats, also uses riparian formations. Monotypic.

What do (1) and (2) mean? Learn more about the scoring system.

Lowlands in E Ecuador, E Peru, extreme SE Colombia (S Amazonas), SW Amazonian Brazil (SW Amazonas, Acre) and NE Bolivia (Pando, La Paz, W Beni, Cochabamba).

Descriptive notes

14–15 cm. Both sexes very like formerly conspecific C. nigrescens. Male is dark grey above, slightly paler below, with narrow white tips to wing-coverts, a small... read more


Male loudsong comprises a low-pitched introductory note followed by a rattle of descending notes,... read more


Largely sympatric with C. serva and in such areas the present species is confined to a... read more

Food and feeding

No detailed studies; most aspects probably similar to C. nigrescens.


No information.


Presumed resident.

Status and conservation

Not globally threatened (Least Concern). Generally fairly common throughout most of its extensive range, which includes a number of large parks and reserves. Preference for... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2020). Riparian Antbird (Cercomacroides fuscicauda). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 21 February 2020).