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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 | Gruiformes | Rallidae | Common Gallinule | Pollona Negra | Galinha-d’água | Gallinula galeata | Native |
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| 3 | Pelecaniformes | Threskiornithidae | White-faced Ibis | Cuervillo de Cañada | Caraúna | Plegadis chihi | Native |
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| 4 | Ardeidae | Black-crowned Night Heron | Garza Bruja | Socó-dorminhoco | Nycticorax nycticorax | Native |
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| 5 | Passeriformes | Icteridae | Brown-and-yellow Marshbird | Pecho Amarillo Común | Dragão | Pseudoleistes virescens | Native |
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| 6 | Thraupidae | Saffron Finch | Jilguero Dorado | Canário-da-terra-verdadeiro | Sicalis flaveola | Native |
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| 7 | Pampa Finch | Verdón | Sabiá-do-banhado | Embernagra platensis | Native |
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