Order: Passeriformes | Family: Thamnophilidae | IUCN Status: Least Concern
Age: Adult | Sex: Male | Loc. Southern Brazil
Age: Adult | Sex: Female | Loc. Southern Brazil
Age: Adult | Sex: Male | Loc. Southern Brazil
Age: Adult | Sex: Female | Loc. Mato Grosso, Brazil
Status: The Rusty-backed Antwren is uncommon and very local known to occur in widely disjunct populations. It also occurs in Br and Bo.
Name in Spanish: Hormiguerito de Dorso Rojizo.
Sub-species: Rusty-backed Antwren (Formicivora rufa urubambae), J. T. Zimmer, 1932. E Peru (locally on E foothills of the Andes in San Martín and Cuzco).
(Formicivora rufa rufa), (Wied, 1831). SC & E Brazil (S Amazonas and extreme E Acre E to C Mato Grosso and Goiás, and from coastal Pernambuco, S to Mato Grosso do Sul and N São Paulo) S to extreme SE Peru (extreme E Madre de Dios), E Bolivia (Beni, La Paz, NE Cochabamba, Santa Cruz), and C & NE Paraguay (locally along R Paraguay and in N Amambay).
Meaning of Name: Formicivora: L. formica= ant and vorus, vorare= eating, to devour. rufa: L. rufus= red, ruddy.

Voice
References:
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- Species range based on: Schulenberg, T. S., D. F. Stotz, and L. Rico. 2006. Distribution maps of the birds of Peru, version 1.0. Environment, Culture & Conservation (ECCo). The Field Museum. http://fm2.fieldmuseum.org/uw_test/birdsofperu on 03/01/2017.
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