Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       Psittacidae Illiger, 1811 - cockatoos and parrots
         Psittacinae Illiger, 1811 - typical parrots
           Psittaculini Vigors, 1825
             Prioniturus Wagler, 1832
               Prioniturus discurus (Vieillot, 1822) - blue-crowned racquet-tail
                 1 Prioniturus discurus whiteheadi Salomonsen, 1953
                 2 Prioniturus discurus mindorensis Steere, 1890
                 3 Prioniturus discurus discurus (Vieillot, 1822)