Parent: Bubo (Horned owls)

└─ Bubo virginianus (Great horned owl)

└─── Bubo virginianus algistus

└─── Bubo virginianus elachistus

└─── Bubo virginianus heterocnemis

└─── Bubo virginianus lagophonus

└─── Bubo virginianus mayensis

└─── Bubo virginianus mesembrinus

└─── Bubo virginianus nacurutu

└─── Bubo virginianus nigrescens

└─── Bubo virginianus pacificus

└─── Bubo virginianus pallescens

└─── Bubo virginianus saturatus

└─── Bubo virginianus subarcticus

└─── Bubo virginianus virginianus