The Boreal Owl (Aegolius funereus) is a small owl. It is also known as the Tengmalm's Owl after Swedish naturalist Peter Gustaf Tengmalm. Other names for the owl include Richardson's Owl, Funeral Owl (latin: funereus), Sparrow Owl, and Pearl Owl (Finnish: helmipöllö and Swedish: pärluggla). This species is a part of the larger grouping of owls known as typical owls, Strigidae, which contains most species of owl. The other grouping is the barn owls, Tytonidae.