Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
Count: [s] 23o;144f;2043g;9628s;2127ss; ‡1f;21g;74s;12ss
   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
  Count: [s] 23o;144f;2043g;9628s;2127ss; ‡1f;21g;74s;12ss
     Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
    Count: [s] 21o;139f;2029g;9571s;2115ss; ‡1f;21g;74s;12ss
       Parvclass Galloanserae Sibley, Ahlquist & Monroe Jr., 1988 see Subcohort Galloanserae Sibley, Ahlquist & Monroe Jr., 1988
      Count: [s] 3o;9f;120g;438s;106ss; ‡3g;5s;2ss
         Superorder Anserimorphae see Order Anseriformes Wagler, 1831
        Count: [s] 1o;4f;46g;158s;45ss; ‡2g;3s;2ss
           Order Anseriformes Wagler, 1831 - waterfowl and screamers
          Count: -
             Infraorder Anserides see Suborder Anseres Linnaeus, 1758
            Count: [s] 2f;43g;154s;45ss; ‡2g;3s;2ss
               Family Anatidae Vigors, 1825 - ducks, geese, swans
              Count: -
                 Subfamily Cygninae Vigors - swans see Subfamily Anserinae Vigors, 1825
                Count: [s] 2g;7s;2ss
                   Genus Coscoroba Reichenbach, 1853
                  Count: [*] 1s
                     1 Coscoroba coscoroba (Molina, 1782) - Coscoroba swan
                    Count: -