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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Records | Conservation status | Notes | ||
| 1 | Anseriformes | Anhimidae | Southern Screamer | Chajá | Tachã | Chauna torquata | Native | 1 |
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| 2 | Charadriiformes | Laridae | Snowy-crowned Tern | Gaviotín Lagunero | Trinta-réis-de-coroa-branca | Sterna trudeaui | Native | 1 |
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| 3 | Brown-hooded Gull | Gaviota Capucho Café | Gaivota-maria-velha | Chroicocephalus maculipennis | Native | 1 |
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| 4 | Ciconiiformes | Ciconiidae | Maguari Stork | Cigüeña Americana | Maguari | Ciconia maguari | Native | 1 |
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| 5 | Suliformes | Phalacrocoracidae | Neotropic Cormorant | Biguá | Biguá | Nannopterum brasilianum | Native | 1 |
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| 6 | Pelecaniformes | Ardeidae | Great Egret | Garza Blanca | Garça-branca-grande | Ardea alba | Native | 1 |
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| 7 | Western Cattle Egret | Garcita Bueyera | Garça-vaqueira | Ardea ibis | Native | 1 |
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| 8 | Passeriformes | Icteridae | Chestnut-capped Blackbird | Varillero Congo | Garibaldi | Chrysomus ruficapillus | Native | 1 |
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