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 Nyctibiidae Chenu & Des Murs, 1851 [monotypic] - potoos Genus Nyctibius Vieillot, 1816 Nyctibius griseus (J.F. Gmelin, 1789) - grey potoo 1 Nyctibius griseus panamensis Ridgway, 1912 2 Nyctibius griseus griseus (Gmelin, 1789) - grey potoo