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] Caprimulgiformes Ridgway, 1881 - nightjars
         Family Caprimulgidae Vigors, 1825 - nightjars
           Subfamily Caprimulginae Vigors, 1825 - nightjars
             Genus Caprimulgus Linnaeus, 1758
               Caprimulgus hirundinaceus Spix, 1825 - pygmy nightjar
                 1 Caprimulgus hirundinaceus cearae (Cory, 1917)
                 2 Caprimulgus hirundinaceus hirundinaceus Spix, 1825
                 3 Caprimulgus hirundinaceus vielliardi Ribon, 1995