Creatures in Crisis
Photograph of São Paulo Marsh Antwren (Formicivora paludicola), recorded as Critically Endangered
São Paulo Marsh Antwren (Formicivora paludicola). Image via Wikimedia Commons.

Critically Endangered

São Paulo Marsh Antwren

Formicivora paludicola

São Paulo Marsh Antwren is endemic to southeastern Brazil.

Status
Critically Endangered
Scientific name
Formicivora paludicola
Taxonomy
Aves · Passeriformes · Thamnophilidae · Formicivora

Appearance

Adult males of the nominate subspecies have an ill-defined pale supercilium and a whitish crescent below the eye on an otherwise lead gray face. Their forehead is grayish white and their crown and upperparts dark chestnut-olive. Their wings are blackish with chestnut-olive edges on the flight feathers.

The marsh antwren is 13 to 15 cm (5.1 to 5.9 in) long and weighs 8 to 12 g (0.28 to 0.42 oz).

Range and habitat

The nominate subspecies is found mostly in coastal Paraná and extreme northeastern Santa Catarina and also south locally into northeastern Rio Grande do Sul. Subspecies F. A. Paludicola is found further north, at fewer than 20 sites in the upper reaches of rios Tietê and Paraíba do Sul in São Paulo state near the city of that name. As its name implies, the marsh antwren primarily inhabits coastal and riverine marshes. It occurs less frequently in flooded plains and in the transition zone between mangroves and drier land.

Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.

Diet and breeding

The marsh antwren's diet has not been detailed but appears to be largely or entirely arthropods. It forages singly, in pairs, or in family groups while staying within dense marsh vegetation.

The breeding season of the marsh antwren's nominate subspecies spans from August to February. The nest and nesting behavioral details of paludicola are not known.

In crisis

São Paulo Marsh Antwren is Critically Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.

Sources

Written for this catalog from the English Wikipedia article on São Paulo Marsh Antwren, Wikidata item Q16089868. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.

Photograph via Wikimedia Commons. Wikipedia · Wikidata · IUCN Red List.

Same genus

Photograph of Black-hooded Antwren (Formicivora erythronotos), recorded as EndangeredEN

Black-hooded Antwren

Formicivora erythronotos
Photograph of Vaquita (Phocoena sinus), recorded as Critically EndangeredCR

Vaquita

Phocoena sinus
Photograph of Javan rhinoceros (Rhinoceros sondaicus), recorded as Critically EndangeredCR

Javan rhinoceros

Rhinoceros sondaicus
Photograph of Sumatran orangutan (Pongo abelii), recorded as Critically EndangeredCR

Sumatran orangutan

Pongo abelii

Quick answers

What is São Paulo Marsh Antwren?
It is endemic to southeastern Brazil.
What is the conservation status of São Paulo Marsh Antwren?
Critically Endangered, as the IUCN category stored on Wikidata for Formicivora paludicola. Confirm the official assessment on iucnredlist.org.
Where does São Paulo Marsh Antwren live?
As its name implies, the marsh antwren primarily inhabits coastal and riverine marshes. It occurs less frequently in flooded plains and in the transition zone between mangroves and drier land.
Why is São Paulo Marsh Antwren in crisis?
It is Critically Endangered on Wikidata. Read the official Red List assessment for the criteria.
Is this the IUCN Red List page for Formicivora paludicola?
No. This is a researched catalog account. The Red List is the assessment.
Is São Paulo Marsh Antwren a pet?
An animal on this catalog is in crisis in the wild. Keeping one is usually the wrong question.