Temporal range: Early Miocene to present
|Great grey owl, Strix nebulosa
This is one of the two living families of owls, the other being the barn owls (Tytonidae). Common names for Stryx are earless owls, though they are not the only owls without ear tufts. "Wood owl" is also used as a more generic name for forest-dwelling owls. Neotropical birds in the genus Ciccaba are sometimes included in Strix.