Order Strigiformes Wagler, 1830 - owls
   Family Strigidae Vigors, 1825 - owls
     Subfamily Buboninae Vigors, 1825 - normal owls see Subfamily Striginae Vigors, 1825
       1 Genus Bubo Duméril, 1806
       2 Genus Otus Pennant, 1769
       3 Genus Speotyto Gloger, 1841 see Genus Athene Boie, 1822
       4 Genus Athene Boie, 1822
       5 Genus †Ornimegalonyx Arredondo
       6 Genus Glaucidium Boie, 1826
       7 Genus Pulsatrix Kaup, 1848