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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Conservation status | Notes | ||
| 1 | Crocodilia | Alligatoridae | Yacare Caiman | Yacaré Negro | Jacaré-do-pantanal | Caiman yacare | Native | |||
| 2 | Charadriiformes | Laridae | Large-billed Tern | Atí | Trinta-réis-grande | Phaetusa simplex | Native |
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| 3 | Ciconiiformes | Ciconiidae | Wood Stork | Tuyuyú | Cabeça-seca | Mycteria americana | Native |
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| 4 | Pelecaniformes | Ardeidae | Little Blue Heron | Garza Azul | Garça-azul | Egretta caerulea | Native |
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| 5 | Cocoi Heron | Garza Mora | Garça-moura | Ardea cocoi | Native |
| ||||
| 6 | Passeriformes | Tyrannidae | Black-backed Water Tyrant | Viudita Blanca | Lavadeira-de-cara-branca | Fluvicola albiventer | Native |
| ||
| 7 | Rodentia | Caviidae | Greater Capybara | Carpincho | Capivara | Hydrochoerus hydrochaeris | Native |
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