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 Chordeilinae - nighthawks
             Genus Chordeiles Swainson, 1831[1832]
               Chordeiles acutipennis (Hermann, 1783) - lesser nighthawk
                 1 Chordeiles acutipennis texensis Lawrence, 1856
                 2 Chordeiles acutipennis littoralis Brodkorb, 1940
                 3 Chordeiles acutipennis micromeris Oberholser, 1914
                 4 Chordeiles acutipennis acutipennis (Hermann, 1783)
                 5 Chordeiles acutipennis crissalis Miller, 1959
                 6 Chordeiles acutipennis aequatorialis Chapman, 1923
                 7 Chordeiles acutipennis exilis (Lesson, 1839)