Northern Boobook

The northern boobook is a hawk owl, a raptorial owl of eastern and southern Asia. It averages 29–33cm in body length with a wingspan of about 60–70cm and an average weight of about 168g, with no sexual dimorphism. Individuals have a brown back and wings with lighter brown horizontal streaks on the tail. Until recently it was treated as the same species as the brown boobook (Wikipedia, general species account).

Although the most common breeding owl in Japan, little research has been done on the species and its subspecies, and the classification of two of its subspecies has been debated (Wikipedia, general species account).