Donald M. Jones / Great Gray Owl (Strix nebulosa), Yaak, Montana

Chase Dekker / Great Gray Owl (Strix nebulosa), Grand Teton National Park, Wyoming

Benjamin Olson / Great Gray Owl (Strix nebulosa), Sax-Zim Bog, Minnesota

Michael Milicia/ BIA / Great Gray Owl (Strix nebulosa) flying, Quebec, Canada

Ole Jorgen Liodden / Great grey owl (Strix nebulosa lapponica) hunting in flight, Lapland, Finland, March.

Alan Murphy / Great Gray Owl (Strix nebulosa) face, Alaska

Donald M. Jones / Great Gray Owl (Strix nebulosa) hunting, North America

Donald M. Jones / Great Gray Owl (Strix nebulosa) hunting, North America

Donald M. Jones / Great Gray Owl (Strix nebulosa), Yaak, Montana

Michael Quinton / Great Gray Owl (Strix nebulosa) parent protecting eggs in nest, North America

Michael Quinton / Great Gray Owl (Strix nebulosa) incubating eggs on nest, North America

Tim Fitzharris / Great Gray Owl (Strix nebulosa) perching on a snow-covered branch, British Columbia, Canada