An annotated checklist of birds of Paraje Tres Cerros, Corrientes province, Argentina Author Fernandez, Juan Manuel Author Thomann, Luz Author Fandiño, Blas Author Cajade, Rodrigo Author Hernando, Alejandra text Check List 2021 2021-03-08 17 2 415 443 http://dx.doi.org/10.15560/17.2.415 journal article 10.15560/17.2.415 1809-127X Synallaxis frontalis (Pelzeln, 1859) Observations. ARGENTINAMultiple and ; Cor- rientes, La Cruz , Paraje Tres Cerros ; 29°09′24′′S , 056° 51′03′′W . Common in the forest. More often heard than seen . Identification. Underparts gray; crown rufous; back brown, with rufous wings; tail long, graduated.