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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 | Podicipediformes | Podicipedidae | Great Grebe | Macá Grande | Mergulhao-grande o chorona | Podiceps major | Native | 1 |
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| 4 | Silvery Grebe | Macá Plateado | Mergulhão-de-orelha-amarela | Podiceps occipitalis | Native | 1 |
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| 5 | Charadriiformes | Laridae | Brown-hooded Gull | Gaviota Capucho Café | Gaivota-maria-velha | Chroicocephalus maculipennis | Native | 1 |
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| 6 | Pelecaniformes | Threskiornithidae | White-faced Ibis | Cuervillo de Cañada | Caraúna | Plegadis chihi | Native | 1 |
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