Aves: Tree View

AVES
  |
NEORNITHES
  |
  |-PALEOGNATHS
  |   \--+--Struthioniformes
  |      \--+--+--Apterygiformes
  |         |  \--Casuariiformes
  |         \--+--Rheiformes
  |            \--Tinamiformes
  |
  \-NEOGNATHS
     |--GALLOANSERAE
     |    |--Anseriformes
     |    \--Galliformes
     |
     \-NEOAVES
        |--METAVES
        |    |--+--Phoenicopteriformes
        |    |  \--+--Phaethontiformes
        |    |     \--Columbiformes
        |    |
        |    \--+--Eurypygiformes
        |       |
        |       \--CYPSELOMORPHAE
        |            |--+--Steatornithiformes 
        |            |  \--Nyctibiiformes
        |            \--+--Podargiformes
        |               \--+--Caprimulgiformes
        |                  \--Apodiformes
        |
        \-CORONAVES
             |
             |--PELECANAE
             |    \--+--Opisthocomiformes
             |       |
             |       \-+--+--Otidiiformes
             |         |  \--+--Cuculiformes
             |         |     \--Gruiformes
             |         |
             |         \--+--Musophagiformes
             |            \--PELECANIMORPHAE
             |                |--Gaviiformes
             |                \--+--+--Sphenisciformes
             |                   |  \--Procellariiformes
             |                   \--+--Ciconiiformes
             |                      \--+--Phalacrocoraciformes
             |                         \--+--Pelecaniformes
             |                            \--Ardeiformes
             |
             \--+--CHARADRIAE
                |    \--Charadriiformes
                |
                \--PASSERAE
                    |--+--+--Cathartiformes
                    |  |  \--Accipitriformes
                    |  \--‘Core Anomalogonatae’
                    |       |--+--Coliiformes
                    |       |  \--Strigiformes
                    |       \--+--Leptosomiformes
                    |          \--+--Troganiformes
                    |             \--+--Bucerotiformes
                    |                \--+--Coraciiformes
                    |                   \--Piciformes
                    |
                    \--+--Cariamiformes
                       \--+--Falconiformes
                          \--+--Psittaciformes
                             \--Passeriformes
Aves—Tree View: Neornithes

The 42 orders
