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 Rhea americana (Linnaeus, 1817) Figure 3A Observations. ARGENTINA • Multiple ( ♂ , ♀ and juveniles); Corrientes , La Cruz , Paraje Tres Cerros ; 29° 06′55′′S , 056°55′09′′W . Several adults and chicks re- corded foraging in the grasslands of PTC during all seasons. We recorded this species in systematic and nonsystematic observations since the beginning of our study. Identification. Unmistakable. Often in groups. Long and powerful legs, small head. Three toes. Plumage is gray with black around the neck and head. Males are darker than females .