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
       [Order] Cuculiformes Wagler, 1830 - cuckoos and plantain-eaters
         Family Cuculidae Vigors, 1825 - cuckoos
           Subfamily Neomorphinae Shelley, 1891
             Genus Morococcyx P.L. Sclater, 1862 [monotypic]
               Morococcyx erythropygus (Lesson, 1842) - lesser ground-cuckoo
                 1 Morococcyx erythropygus mexicanus Ridgway, 1915
                 2 Morococcyx erythropygus erythropygus (Lesson, 1842)