Accipitriformes
      Anseriformes
        Bucerotiformes
          Bustards
            Caprimulgiformes
              Casuariiformes
                Casuariiformes
                  Charadriiformes
                    Ciconiiformes
                      Columbidae
                        Coraciiformes
                          Cuculiformes
                            Eurypygiformes
                              Falconiformes
                                Galliformes
                                  Gaviiformes
                                    Gruiformes
                                      Hummingbirds
                                        Mousebirds
                                          Musophagidae
                                            Opisthocomidae
                                              Owls
                                                Parrots
                                                  Passerine
                                                    Penguins
                                                      Phaethontiformes
                                                        Phoenicopteriformes
                                                          Piciformes
                                                            Podicipediformes
                                                              Procellariiformes
                                                                Sandgrouse
                                                                  Struthionidae
                                                                    Suliformes
                                                                      Trogons