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Alternative name: Tengmalm's Owl
The Boreal Owl is 22-27 cm long with a 50-62 cm wingspan.
This species is not normally migratory, but in some autumns significant numbers move further south. It is rare any great distance south of its breeding range, although this is partly due to the problems of detecting this nocturnal owl outside the breeding season when it is not calling.
This small owl is known as Tengmalm's Owl in Europe after the Swedish naturalist Peter Gustaf Tengmalm.
This species is a part of the larger grouping of owls known as typical owls, Strigidae, which contains most species of owl.
There are 6 subspecies:
Dense coniferous forests.
It is largely nocturnal.
The flight is strong and direct.
This smallish owl eats mainly voles and other mammals but also birds as well as insects and other invertebrates.
It lays 3-6 eggs in a tree cavity.
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