Rusty-backed Antwren (Formicivora rufa)
Illustration redrawn by AI from a real photograph

Rusty-backed Antwren

Formicivora rufa (Wied-Neuwied, M, 1831)

12–13 cmLength11 gWeight

The rusty-backed antwren (Formicivora rufa) is a species of bird in the family Thamnophilidae, the "typical antbirds".

Busiest months: July and September–October · Most records: Brazil, Bolivia, Peru

Least Concern

Where and when it's recorded

Rusty-backed Antwren has been recorded at 63 of the 8,171 birding hotspots we track, in 5 countries and regions.

Records by month Southern Hemisphere

Where it's recorded most

  1. Pousada TrijunçãoBrazil264 records
  2. Poconé – SouthWild PantanalBrazil201 records
  3. Aquidauana – Pousada AguapéBrazil184 records
More places
  1. Poconé – Aymara LodgeBrazil155 records
  2. Barba Azul Nature ReserveBolivia134 records
  3. Poconé – Rio Pixaim e arredoresBrazil123 records
  4. PN Chapada dos GuimarãesBrazil121 records
  5. Poconé – Pousada PiuvalBrazil106 records
  6. Pantanal – Pousada Rio ClaroBrazil102 records
  7. Pantanal da Nhecolândia – Fazenda AlegriaBrazil89 records

Countries and regions with the most records

BrazilBoliviaPeruParaguaySuriname

eBird records via GBIF up to 2024-12-31. A record means someone listed it; more records partly mean more birders, not more birds.

About

The rusty-backed antwren (Formicivora rufa) is a species of bird in the family Thamnophilidae, the "typical antbirds". It is found in Bolivia, Brazil, Paraguay, Peru, and Suriname.

Excerpt from Wikipedia, CC BY-SA 4.0 · authors · Read more on Wikipedia

Questions

How big is the Rusty-backed Antwren?

The Rusty-backed Antwren is about 12–13 cm long and weighs around 11 g.

Where does the Rusty-backed Antwren live?

Its breeding range: South America: Amazonia, eastern Brazil and central South America. It is most often recorded in Brazil, Bolivia and Peru.

When is the best time to see the Rusty-backed Antwren?

At the hotspots we track, it is recorded most in July, September and October (Southern Hemisphere).

Is the Rusty-backed Antwren endangered?

The IUCN Red List classifies the Rusty-backed Antwren as Least Concern.

What does the Rusty-backed Antwren eat?

Main food: Insects & other invertebrates.

What family is the Rusty-backed Antwren in?

It belongs to the family Antbirds (Thamnophilidae), order Passerines (Passeriformes).

At a glance

Length
12–13 cm
Weight
11 g
Habitat
Grassland
Diet
Insects & other invertebrates
Lifestyle
Perches in trees
Migration
Resident (barely migrates)
Conservation
Least Concern
More measurements
Wing
51 mm
Tail
56 mm
Bill
16 mm
Tarsus
21 mm

Averages from the AVONET dataset; length from field guides where available.

Range

South America: Amazonia, eastern Brazil and central South America

Breeding range, IOC World Bird List 15.2

Classification

Order
Passerines Passeriformes
Family
Antbirds Thamnophilidae
Genus
Formicivora

Other birds in the genus Formicivora

Narrow-billed AntwrenNarrow-billed AntwrenFormicivora iheringiBlack-hooded AntwrenBlack-hooded AntwrenFormicivora erythronotosNorthern White-fringed AntwrenNorthern White-fringed AntwrenFormicivora intermediaSouthern White-fringed AntwrenSouthern White-fringed AntwrenFormicivora griseaSerra AntwrenSerra AntwrenFormicivora serranaBlack-bellied AntwrenBlack-bellied AntwrenFormicivora melanogasterSincora AntwrenSincora AntwrenFormicivora grantsauiMarsh AntwrenMarsh AntwrenFormicivora acutirostrisRufous-rumped AntwrenRufous-rumped AntwrenEuchrepomis callinotaChestnut-shouldered AntwrenChestnut-shouldered AntwrenEuchrepomis humeralis
Rusty-backed Antwren

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Free to use with credit: “Illustration: Bird Album (birdalbum.com)”. Drawn by AI from a reference photo by Ivo Carlos Zecchin. ↗

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