| Subject | Portuguese | English |
| nat.sc. | êider-de-lunetas | spectacled eider (Somateria fischeri) |
| nat.res. | êider-de-steller | Steller's eider (Polysticta stelleri) |
| nat.res. | êider-edredão | eider (Somateria mollissima) |
| nat.res. | êider-edredão | common eider (Somateria mollissima) |
| nat.res. | êider-real | king eider (Somateria spectabilis) |