Parent: Strigidae (Typical owls)

└─ Aegolius (Saw-whet owls)

└─── Aegolius acadicus (Northern saw-whet owl)

└─── Aegolius funereus (Boreal owl)

└─── Aegolius harrisii (Buff-fronted owl)

└─── Aegolius ridgwayi (Unspotted saw-whet owl)