This species qualifies as Vulnerable as it has a small, fragmented and declining range, and a small and rapidly declining population. Its survival probably depends on the preservation of forest at key sites.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
9.5 cm. Small, pale, relatively long-tailed antwren. Male plumbeous. Black wings with two bold white wing-bars. Black tail with broad white terminal band. Underparts paler with black bib. Female similar, but paler above. Grey wings with whitish wing-bars, creamy-buff underparts, whitish on throat and greyish on flanks. Similar spp. Tail-band is distinctive. Sympatric White-flanked Antwren M. axillaris luctuosa can show white tip to tail, but never as extensively. Also much darker with less contrasting bib. Voice Nasal descending beer bin.
Dinerstein, E.; Olson, D. M.; Graham, D. J.; Webster, A. L.; Primm, S. A.; Bookbinder, M. P.; Ledec, G. 1995. A conservation assesssment of the terrestrial ecoregions of Latin America and the Caribbean. World Bank, Washington, D.C.
Fearnside, P. 1996. Brazil. In: Harcourt, C.S.; Sayer, J.A. (ed.), The conservation atlas of tropical forests: the Americas, pp. 229-248. Simon & Schuster, New York and London.
Whitney, B. M.; Pacheco, J. F. 1995. Distribution and conservation status of four Myrmotherula antwrens (Formicariidae) in the Atlantic Forest or Brazil. Bird Conservation International 5(2/3): 421-439.
Whitney, B. M.; Pacheco, J. F. 1997. Behavior, vocalizations, and relationships of some Myrmotherula Antwrens (Thamnophilidae) in eastern Brazil, with comments on the "plain-winged" group. Ornithological Monographs 48: 809-819.
Further web sources of information
Explore HBW Alive for further information on this species
Text account compilers
Benstead, P., Capper, D., Clay, R., Sharpe, C J, Symes, A.
De Luca, A., Develey, P., Lima, P.
IUCN Red List evaluators
Butchart, S., Symes, A.
BirdLife International (2014) Species factsheet: Myrmotherula urosticta. Downloaded from http://www.birdlife.org on 25/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 25/07/2014.
This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
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Additional resources for this species
|Current IUCN Red List category||Vulnerable|
|Species name author||(Sclater, 1857)|
|Population size||1500-7000 mature individuals|
|Distribution size (breeding/resident)||3,000 km2|
|Links to further information|
|- Additional Information on this species|