(Struthio,(Dromaius_novaehollandiae,(Dinornis_robustus,((Tinamus_robustus,((Burhinus_grallarius,(Porphyrio_melanotus,(Grus_rubicunda,((Anhima_cornuta,Chauna_torquata),(Anseranas_semipalmata,Presbyornis_pervetus,Anatalavis_oxfordi,Vegavis_iaai,(Dendrocygna_eytoni,(Cereopsis_novaehollandiae,(Anser_caerulescens,(Malacorhynchus,Tadorna_tadornoides))))))))),(Lithornis_promiscuus,Lithornis_plebius,Paracathartes_howardae))),(Dromornis_planei,(Sylviornis_neocaledoniae,(Megavitiornis_altirostris,(Talegalla_fuscirostris,Mwalau,(Leipoa_ocellata,Megapodius_reinwardt,Megapodius_eremita,Alectura_lathami),(Macrocephalon,Eulipoa_wallacei),(Acryllium_vulturinum,(Gallus_gallus,Coturnix_pectoralis,Phasianus_colchicus),(Ortalis_vetula,Crax_rubra))))))))));