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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Conservation status | Notes | ||
| 1 | Anseriformes | Anatidae | Yellow-billed Pintail | Pato Maicero | Marreca-parda | Anas georgica | Native |
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| 2 | Podicipediformes | Podicipedidae | Pied-billed Grebe | Macá Pico Grueso | Mergulhão-caçador | Podilymbus podiceps | Native |
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| 3 | Pelecaniformes | Threskiornithidae | Bare-faced Ibis | Cuervillo Cara Pelada | Tapicuru | Phimosus infuscatus | Native |
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| 4 | Ardeidae | Black-crowned Night Heron | Garza Bruja | Socó-dorminhoco | Nycticorax nycticorax | Native |
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| 5 | Cocoi Heron | Garza Mora | Garça-moura | Ardea cocoi | Native |
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| 6 | Passeriformes | Thraupidae | Pampa Finch | Verdón | Sabiá-do-banhado | Embernagra platensis | Native |
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| 7 | Rodentia | Caviidae | Greater Capybara | Carpincho | Capivara | Hydrochoerus hydrochaeris | Native |
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