Markus Varesvuo / Blakiston's Fish Owl (Ketupa blakistoni) perched, Hokkaido, Japan, February.

Markus Varesvuo / Blakinston's fish owl (Ketupa blakistoni) with caught fish on snow, Hokkaido Japan February

Aflo / Blakistons fish owl (Bubo blakistoni) perched on snowy branch, Shiretoko Peninsula, Hokkaido, Japan, December.

Aflo / Blakiston's Fish Owl (Bubo blakistoni) hunting, Shiretoko Peninsula, UNESCO World Heritage Site, Hokkaido, Japan, June.

Aflo / Blakiston's Fish Owl (Bubo blakistoni) hunting, Hokkaido, Japan

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) nesting habitat, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) nest in tree, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) perched in tree, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) perched in tree, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) chick in decaying tree trunk, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) with chick peering out of nest at night, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) on nest at night, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) with chick on nest at night, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) with chick on nest at night, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) with chick on nest at night, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) chick peering out from nest, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) perched in tree, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) chick peering out of nest, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) chick close up head portrait, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) on nest at night, Primorskiy krai, Russia.

Vladimir Medvedev / Blakiston's fish owl (Bubo / Ketupa blakistoni) chick peering out from nest, Primorskiy krai, Russia.

Nature Production / Blakiston's Fish Owl (Bubo / Ketupa blakistoni) fledgling, 10 days after leaving its nest, Higashi Daisetsu, Hokkaido, Japan, June, Endangered

David Tipling / Blakiston's Fish Owl {Bubo blakistoni} in snow, Washino-yado Inn, near Rausu, Hokkaido, Japan, January 2008, Endangered species

David Tipling / Mr Kawamura placing fish in pool for attracting Blakiston's Fish Owl {Bubo blakistoni} at Washino-yado Inn, near Rausu, Hokkaido, Japan, January 2008, Endangered species

David Tipling / Blakiston's Fish Owl {Bubo blakistoni} beside water, Washino-yado Inn, near Rausu, Hokkaido, Japan, January 2008, Endangered species

Nature Production / Blakiston's fish owl {Bubo / Ketupa blakiston} in snow, Hokkaido, Japan

Nature Production / Blakiston's fish owl {Bubo / Ketupa blakiston} eyes shining bright at night, Hokkaido, Japan

Nature Production / Blakiston's fish owl {Bubo / Ketupa blakiston} flying, Hokkaido, Japan

Nature Production / Blakiston's fish owl {Bubo / Ketupa blakiston} catching Japanese dace {Tribolodon hakonensis} with claws underwater, Hokkaido, Japan

Nature Production / Blakiston's fish owl {Bubo / Ketupa blakiston} in snow, Hokkaido, Japan

Nature Production / Close up of claws of Blakiston's Fish Owl {Bubo / Ketupa blakistoni} Japan

Nature Production / Blakiston's Fish Owl {Bubo / Ketupa blakistoni} catching Big-scaled redfin {Tribolodon hakonensis} with its claws underwater, Hokkaido, Japan

Nature Production / Blakiston's Fish Owl {Bubo / Ketupa blakistoni} flying, Japan

Nature Production / Blakiston's Fish Owl {Bubo / Ketupa blakistoni} beside water waiting to catch fish in winter, Japan

Nature Production / Blakiston's Fish Owl {Bubo / Ketulpa blakiston} Japan

Konstantin Mikhailov / Japanese / Maximowich's Poplar tree (Populus maximowiczii) with nest of Blakiston's Fish owl, East Siberia, Russia

Colin Seddon / Blakiston's fish owl portrait {Bubo blakiston} captive

Peter Waechtershaeuser/ BIA / Blakiston's Fish-Owl (Ketupa blakistoni) in snow, Hokkaido, Japan