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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Conservation status | Notes | ||
| 1 | Rheiformes | Rheidae | Greater Rhea | Ñandú | Ema | Rhea americana | Native |
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| 2 | Anseriformes | Anatidae | White-faced Whistling Duck | Sirirí Pampa | Irerê | Dendrocygna viduata | Native |
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| 3 | Charadriiformes | Laridae | Large-billed Tern | Atí | Trinta-réis-grande | Phaetusa simplex | Native |
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| 4 | Pelecaniformes | Threskiornithidae | Roseate Spoonbill | Espátula Rosada | Colhereiro | Platalea ajaja | Native |
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| 5 | Ardeidae | Western Cattle Egret | Garcita Bueyera | Garça-vaqueira | Ardea ibis | Native |
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| 6 | Accipitriformes | Accipitridae | Snail Kite | Caracolero | Gavião-caramujeiro | Rostrhamus sociabilis | Native |
| ||
| 7 | Passeriformes | Tyrannidae | White Monjita | Monjita Blanca | Noivinha | Xolmis irupero | Native |
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