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] Strigiformes Wagler, 1830 - owls
Family Strigidae Vigors, 1825 - owls
Subfamily Surniinae del Hoyo et al., 2014
Genus Aegolius Kaup, 1829
Aegolius ridgwayi (Alfaro, 1905)
1 Aegolius ridgwayi tacanensis Moore, 1947
2 Aegolius ridgwayi rostratus (Griscom, 1930)
3 Aegolius ridgwayi ridgwayi (Alfaro, 1905)