Order Strigiformes Wagler 1830 (owl)
Parent taxon: Falconimorphae according to B. C. Livezey and R. L. Zusi 2007
See also Carroll 1988, del Hoyo et al. 2014, Guthrie 1992, Hay 1930, Mayr 2005, Parmalee 1992, Wetmore 1940 and Wetmore 1960
Sister taxa: none
Subtaxa: Berruornis Bubonidae Heterostrigidae Ogygoptyngidae Palaeoglaucidae Primoptynx Protostrigidae Selenornithinae Sophiornithidae Strigidae Tytonidae