Passeriformes
Thamnophilidés
Formicivora
acutirostris
Marsh Antwren (Formicivora acutirostris) is a species of bird in the Thamnophilidae family.
Grassland : Subtropical/Tropical Seasonally Wet/Flooded ; Wetlands (inland) : Shrub Dominated Wetlands, Bogs, Marshes, Swamps, Fens, Peatlands