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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Records | Conservation status | Notes | ||
| 1 | Anseriformes | Anatidae | Lake Duck | Pato Zambullidor Chico | Marreca-pé-na-bunda | Oxyura vittata | Native | 1 |
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| 2 | Red Shoveler | Pato Cuchara | Marreca-colhereira | Spatula platalea | Native | 1 |
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| 3 | Yellow-billed Pintail | Pato Maicero | Marreca-parda | Anas georgica | Native | 1 |
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| 4 | Yellow-billed Teal | Pato Barcino | Marreca-pardinha | Anas flavirostris | Native | 1 |
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| 5 | Gruiformes | Rallidae | Red-gartered Coot | Gallareta Ligas Rojas | Carqueja-de-bico-manchado | Fulica armillata | Native | 1 |
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| 6 | Rodentia | Echimyidae | Coypu | Coipo | Ratão-do-banhado | Myocastor coypus | Native | 1 |
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