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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Records | Conservation status | Notes | ||
| 1 | Anseriformes | Anatidae | Brant Goose | Barnacla Carinegra | Branta bernicla | Native | 2 |
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| 2 | Bufflehead | Porrón Coronado | Bucephala albeola | Native | 4 |
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| 3 | Common Goldeneye | Porrón osculado | Bucephala clangula | Native | 2 |
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| 4 | Red-breasted Merganser | Mergo Copetón | Mergus serrator | Native | 4 |
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| 5 | American Black Duck | Pato Negro Americano | Anas rubripes | Native | 2 |
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| 6 | Suliformes | Phalacrocoracidae | Double-crested Cormorant | Cormorán Orejudo | Nannopterum auritum | Native | 2 |
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