Restinga Antwren Formicivora littoralis

  • Order: Passeriformes
  • Family: Thamnophilidae
  • Monotypic
  • Authors: Flávia G. Chaves, Maurício B. Vecchi, Tonny Marques de Oliveira Jr., Yara Ballarini, and Maria Alice S. Alves


Conservation Status

Since its discovery, Restinga Antwren has been considered "Critically Endangered" with extinction in global and nacional lists (IUCN 2011 and Machado et al. 2008, respectively). Mattos et al. (2009) produced a revised estimate of its population size and recommended that the species conservation status be changed to "Endangered" at the global level (IUCN 2013). It is important to note that this result is not due a decrease in pressures on the habitat of Restinga Antwren, but it is based solely on a more accurate assessment of population parameters (Mattos et al. 2009). Habitat loss is the main threat to this species, whose habitat is highly fragmented and subjected to ongoing anthropogenic pressures. If this pressure continues, the species may return to the "Critically Endangered" ranking within a few years.

The joint effort of public agencies, researchers and private sector resulted in the development of the National Plan for the Conservation of the Restinga Antwren in 2010 (Alvarez et al. 2010). This document has three lines of action: research, education and outreach, and public policy. This plan, already underway, contributes decisively to the preservation and maintenance of the species.

Effects of human activity on populations

Human activity has a strong effect on Restinga Antwren. The main cause of the ranking of this species as Endangered is habitat loss. Anthropogenic pressure, such as human invasions, burning, and real estate speculation (e.g. mega resorts), result in habitat suppression and degradatiot. Restinga Antwren is sensitive to open areas, avoiding crossing matrices changed by man, such as roads (Navegantes et al. 2013).

The release and introduction of invasive species (such as marmosets and exotic plants, such as Coast Sheoak, Casuarina equisetifolia) also can have a negative effect on populations of Restinga Antwren.

Recommended Citation

Chaves, F. G., M. B. Vecchi, T. Marques de Oliveira Jr., Y. Ballarini, and M. A. S. Alves (2014). Restinga Antwren (Formicivora littoralis), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA.