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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Conservation status | Notes | ||
| 1 | Anseriformes | Anatidae | Rosy-billed Pochard | Pato Picazo | Marrecão | Netta peposaca | Native |
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| 2 | Charadriiformes | Recurvirostridae | Black-necked Stilt | Tero Real | Himantopus mexicanus | Native | ||||
| 3 | Laridae | Yellow-billed Tern | Gaviotín Chico Fluvial | Trinta-réis-anão | Sternula superciliaris | Native |
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| 4 | Olrog´s Gull | Gaviota Cangrejera | Gaivota-de-rabo-preto | Larus atlanticus | Native |
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| 5 | Suliformes | Phalacrocoracidae | Neotropic Cormorant | Biguá | Biguá | Nannopterum brasilianum | Native |
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| 6 | Passeriformes | Tyrannidae | Spectacled Tyrant | Pico de Plata | Viuvinha-de-óculos | Hymenops perspicillatus | Native |
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| 7 | Rodentia | Caviidae | Brazilian Guinea Pig | Cuis Grande | Cavia aperea | Native |
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