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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Conservation status | Notes | ||
| 1 | Anseriformes | Anatidae | Crested Duck | Pato Crestón | Lophonetta specularioides | Native |
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| 2 | Podicipediformes | Podicipedidae | Great Grebe | Macá Grande | Mergulhao-grande o chorona | Podiceps major | Native |
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| 3 | Charadriiformes | Haematopodidae | Magellanic Oystercatcher | Ostrero Austral | Haematopus leucopodus | Native |
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| 4 | Laridae | Sandwich Tern | Gaviotín Pico Amarillo | Trinta-réis-de-bando | Thalasseus sandvicensis | Native | ||||
| 5 | Royal Tern | Gaviotín Real | Trinta-réis-real | Thalasseus maximus | Native |
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| 6 | South American Tern | Gaviotín Sudamericano | Trinta-réis-de-bico-vermelho | Sterna hirundinacea | Native |
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| 7 | Kelp Gull | Gaviota Cocinera | Gaivotão | Larus dominicanus | Native |
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