| Clase AVES | | Eduardo de Juana |
| Orden STRUTHIONIFORMES | | |
| - Familia RHEIDAE (RHEAS) | | Anna Folch |
| - Familia CASUARIIDAE (CASSOWARIES) | | Anna Folch |
| - Familia DROMAIIDAE (EMU) | | Anna Folch |
| - Familia APTERYGIDAE (KIWIS) | | Anna Folch |
| Orden TINAMIFORMES | | |
| - Familia TINAMIDAE (TINAMOUS) | | José Cabot |
| Orden SPHENISCIFORMES | | |
| - Familia SPHENISCIDAE (PENGUINS) | | Isabel Martínez |
| Orden GAVIIFORMES | | |
| - Familia GAVIIDAE (DIVERS) | | Carles Carboneras |
| Orden PODICIPEDIFORMES | | |
| - Familia PODICIPEDIDAE (GREBES) | | Francesc Llimona & Josep del Hoyo |
| Orden PROCELLARIIFORMES | | |
| - Familia DIOMEDEIDAE (ALBATROSSES) | | Carles Carboneras |
| - Familia PROCELLARIIDAE (PETRELS AND SHEARWATERS) | | Carles Carboneras |
| - Familia HYDROBATIDAE (STORM-PETRELS) | | Carles Carboneras |
| - Familia PELECANOIDIDAE (DIVING-PETRELS) | | Carles Carboneras |
| Orden PELECANIFORMES | | |
| - Familia PHAETHONTIDAE (TROPICBIRDS) | | Jaume Orta |
| - Familia PELECANIDAE (PELICANS) | | Andrew Elliott |
| - Familia SULIDAE (GANNETS AND BOOBIES) | | Carles Carboneras |
| - Familia PHALACROCORACIDAE (CORMORANTS) | | Jaume Orta |
| - Familia ANHINGIDAE (DARTERS) | | Jaume Orta |
| - Familia FREGATIDAE (FRIGATEBIRDS) | | Jaume Orta |
| Orden CICONIIFORMES | | |
| - Familia ARDEIDAE (HERONS) | | Albert Martínez-Vilalta & Anna Motis |
| - Familia SCOPIDAE (HAMERKOP) | | Andrew Elliott |
| - Familia CICONIIDAE (STORKS) | | Andrew Elliott |
| - Familia BALAENCIPITIDAE (SHOEBILL) | | Andrew Elliott |
| - Familia THRESKIORNITHIDAE (IBISES AND SPOONBILLS) | | Eloïsa Matheu & Josep del Hoyo |
| Orden PHOENICOPTERIFORMES | | |
| - Familia PHOENICOPTERIDAE (FLAMINGOS) | | Josep del Hoyo |
| Orden ANSERIFORMES | | |
| - Familia ANHIMIDAE (SCREAMERS) | | Carles Carboneras |
| - Familia ANATIDAE (DUCKS, GEESE AND SWANS) | | Carles Carboneras |