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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Conservation status | Notes | ||
| 1 | Anseriformes | Anhimidae | Southern Screamer | Chajá | Tachã | Chauna torquata | Native |
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| 2 | Anatidae | Black-headed Duck | Pato Cabeza Negra | Marreca-de-cabeça-preta | Heteronetta atricapilla | Native |
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| 3 | Silver Teal | Pato Capuchino | Marreca-cricri | Spatula versicolor | Native |
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| 4 | Podicipediformes | Podicipedidae | White-tufted Grebe | Macá Común | Mergulhão-de-orelha-branca | Rollandia rolland | Native |
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| 5 | Great Grebe | Macá Grande | Mergulhao-grande o chorona | Podiceps major | Native |
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| 6 | Gruiformes | Rallidae | Red-fronted Coot | Gallareta Escudete Rojo | Carqueja-de-escudo-vermelho | Fulica rufifrons | Native |
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| 7 | White-winged Coot | Gallareta Chica | Carqueja-de-bico-amarelo | Fulica leucoptera | Native |
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| 8 | Ciconiiformes | Ciconiidae | Maguari Stork | Cigüeña Americana | Maguari | Ciconia maguari | Native |
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| 9 | Pelecaniformes | Ardeidae | Stripe-backed Bittern | Mirasol Común | Socoí-amarelo | Botaurus involucris | Native |
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| 10 | Striated Heron | Garcita Azulada | Socozinho | Butorides striata | Native |
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