Data Zone
| Scientific name | Common name | Family | Red List category |
|---|---|---|---|
| Formicivora acutirostris | Parana Antwren | Thamnophilidae (Typical Antbirds) | NT |
| Formicivora erythronotos | Black-hooded Antwren | Thamnophilidae (Typical Antbirds) | EN |
| Formicivora grantsaui | Sincora Antwren | Thamnophilidae (Typical Antbirds) | EN |
| Formicivora grisea | Southern White-fringed Antwren | Thamnophilidae (Typical Antbirds) | LC |
| Formicivora iheringi | Narrow-billed Antwren | Thamnophilidae (Typical Antbirds) | LC |
| Formicivora intermedia | Northern White-fringed Antwren | Thamnophilidae (Typical Antbirds) | LC |
| Formicivora melanogaster | Black-bellied Antwren | Thamnophilidae (Typical Antbirds) | LC |
| Formicivora paludicola | Marsh Antwren | Thamnophilidae (Typical Antbirds) | CR |
| Formicivora rufa | Rusty-backed Antwren | Thamnophilidae (Typical Antbirds) | LC |
| Formicivora serrana | Serra Antwren | Thamnophilidae (Typical Antbirds) | LC |