Chicks of Northern hawk owl (Surnia ulula ulula), native to Scandinavia and Eurasia, captive, World Owl Trust, Cumbria, England, United Kingdom, Europe

Hawk owl (Surnia ulula), pouncing on prey below the snow, Finland, Scandinavia, Europe

Northern Hawk Owl

Northern hawk owl (Surnia ulula), female with prey perched at the nesting hole, Finland, Europe

Northern hawk owl (Surnia ulula), female with prey, Finland, Europe

Northern hawk owl (Surnia ulula), branchling, Varanger, Finnmark, Norway, Europe

Northern hawk owl (Surnia ulula), branchling, Varanger, Finnmark, Norway, Europe

Northern Hawk Owl (Surnia ulula), known for sitting on the highest perch possible while looking for prey such as voles moving below. This one sits on the top of a tree against a blue sky, South-central Alaska, Anchorage, Alaska, United States of America

Hawk owl (Surnia ulula) with a muskrat (Ondatra zibethicus) in it's claws while sitting in the snow in winter; Quebec, Canada

Northern Hawk Owl (Surnia ulula), has just made a vole kill and is about to fly back to a perch to consume it. Grass piece has been removed from face. Owl looks at camera. South-central Alaska, Anchorage, Alaska, United States of America

Northern Hawk Owl (Surnia ulula), known for sitting on the highest perch possible while looking for prey such as voles moving below. This one sits on the top of a tree against a blue sky, South-central Alaska, Anchorage, Alaska, United States of America

Northern Hawk-Owl (Surnia ulula) perched on a branch and watching for prey; Quebec, Canada

Northern Hawk Owl (Surnia ulula) standing in snow, Alaska, United States of America

Northern Hawk Owl (Surnia ulula), known for sitting on the highest perch possible while looking for prey such as voles moving below. This one flies from the top of a tree with a rodent in it's claws, Alaska, United States of America

Northern Hawk Owl (Surnia ulula), known for sitting on the highest perch possible while looking for prey such as voles moving below. This one sits on the top of a tree against a blue sky with a rodent in it's mouth, Alaska, United States of America

Northern Hawk Owl (Surnia ulula), known for sitting on the highest perch possible while looking for prey such as voles moving below. This one sits on the top of a tree against a blue sky, Alaska, United States of America

Northen Hawk Owl (Surnia ulula) catching a muskrat in snow. Central Quebec region. Quebec. Canada

Northern hawk-owl on a branch, Surnia ulula. Tanabru, Norway

Northern hawk-owl on a branch, Surnia ulula. Tanabru, Norway

Northern hawk-owl on a branch, Surnia ulula. Tanabru, Norway