Brazil (southern Mato Grosso do Sul east to Minas Gerais, locally to southern Bahia, and south to Rio de Janeiro and Rio Grande do Sul), eastern Paraguay, north-eastern Argentina and northern Uruguay. Considered by some authors to be a subspecies of Highland Elaenia (Elaenia obscura).
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Small-headed Elaenia (Elaenia sordida) [XC332374]
by Douglas Meyer from Casca d'Anta, Parque Nacional da Serra da Canastra, Minas Gerais, Brazil (call, st2 call)
Small-headed Elaenia (Elaenia sordida) [XC845246]
by id from Campina do Bananal, Brazil (song)
Subspecies
Considered by some authors to be a subspecies of Highland Elaenia (Elaenia obscura).