The Blakiston’s fish owl (Ketupa blakistoni blakistoni) inhabits mainly in Hokkaido within Japan. The owls are the largest owl in Japan with the wing span extending over 180cm.
The Blakiston’s fish owl breeds in a hollow developed in broad-leaved large trees. But trees should be over 300 years old to develop and sustain such a big hollow for the owls. Today, that huge trees are rarely left.