Bird of the Week, September 13, 2013
Sincora Antwren


Sincora Antwren by Nick Athanas


The Sincora Antwren was once mistaken for the somewhat similar and widespread Rusty-backed Antwren. However, in 2007, the two were designated separate species due to their distinct vocalizations, plumage, and habitat preferences. Like other members of its genus, the Sincora Antwren has a loud, repetitive song and shows strong sexual dichromatism, with plumage color differing between males and females.


The small, long-tailed bird is only found in the Chapada Diamantina National Park in northeast Brazil. With support from ABC, researchers from Associação Baiana para Conservação dos Recursos Naturais (ABCRN) conducted seven bird surveys throughout the park from 2011-2013 to better understand the species’ range, ecology, and conservation needs. Their surveys detected the species at six sites, which extended its known range by around 28 miles. Breeding behavior of the Sincora Antwren was first observed and recorded during this study. Dependent juvenile birds were also seen, confirming successful nesting in the area.


Fires set by farmers and ranchers are the major threat to the habitat of this species, which is likely decreasing across its small range.


See the Sincora Antwren in action.



Help ABC conserve this and other birds and their habitats!





Photo by Nick Athanas; Range Map, ABC