Markus Varesvuo / Eurasian pygmy owl (glaucidium passerinum) perched on branch, Helsinki, Finland, January

Bengt Lundberg / Pygmy owl peers out of nest hole in tree {Glaucidium passerinum} Sweden

Markus Varesvuo / Pygmy Owl (Glaucidium passerinum) Finland March

Eric Medard / Eurasian Pygmy Owl (Glaucidium passerinum), captive

Markus Varesvuo / Eurasian pygmy owl (glaucidium passerinum) on snow covered branch, Kuusamo, Finland, January

Markus Varesvuo / Eurasian pygmy owl (glaucidium passerinum) portrait, Kuusamo, Finland, January

Markus Varesvuo / Eurasian pygmy owl (glaucidium passerinum) perched on snow covered branch, Kuusamo, Finland, January

Markus Varesvuo / Eurasian pygmy owl (glaucidium passerinum) perched on branch, Hyvinkaa, Finland, January

Kerstin Hinze / Pygmy owl (Glaucidium passerinum) with prey sitting on a branch with lichens, Carinthia, Austria

Kerstin Hinze / Pygmy owl (Glaucidium passerinum) with bird prey sitting on a branch with lichens, Carinthia, Austria

Kerstin Hinze / Pygmy owl (Glaucidium passerinum) looking out of its tree hole, Carinthia, Austria

Kerstin Hinze / Pygmy owl (Glaucidium passerinum) with prey sitting on a branch with lichens, Carinthia, Austria

Wild Wonders of Europe / Lesniewski / Pygmy Owl (Glaucidium passerinum) perching on a branch. Bieszczady, Carpathian Mountains, Poland, June.

Markus Varesvuo / Pygmy Owl (Glaucidium passerinum) perched, looking down, Kuusamo, Finland, January

Bruno D'Amicis / Pigmy Owl (Glaucidium passerinum) perching on a dead Spruce (Picea abies) branch. Western Tatras, Slovakia, April.

Bruno D'Amicis / Pygmy Owl (Glaucidium passerinum) perched on top of a young Spruce (Picea abies). Western Tatras, Slovakia, April.

Bruno D'Amicis / Pigmy Owl (Glaucidium passerinum) perching on a dead Spruce (Picea abies) branch. Western Tatras, Slovakia, April.

Bruno D'Amicis / Pigmy Owl (Glaucidium passerinum) perching on a dead Spruce (Picea abies) branch. Western Tatras, Slovakia, April.

Dietmar Nill / Eurasian pygmy owl (Glaucidium passerinum) perched, Germany

Dietmar Nill / Eurasian pygmy owl (Glaucidium passerinum) perched amongst vegetation, Germany

Dietmar Nill / Eurasian pygmy owl (Glaucidium passerinum) perched with bird prey, Germany

Dietmar Nill / Eurasian pygmy owl (Glaucidium passerinum) perched with bird prey, Germany

Guy Edwardes / Eurasian pygmy owl (Glaucidium passerinum) in snow, Kuusamo, Finland, February

Roy Mangersnes / Pygmy owl (Glaucidium passerinum) sitting in pine tree in boreal forest, Troms, Norway. May

Roy Mangersnes / Eurasian Pygmy owl (Glaucidium passerinum) sitting in pine tree, Norway. May

Rolf Nussbaumer / Juvenile Eurasian Pygmy-Owl (Glaucidium passerinum) in tree, Oberaegeri, Switzerland. August 1994

Bengt Lundberg / Pygmy owl {Glaucidium passerinum} on mossy stump, Sweden

Bengt Lundberg / Pygmy Owl {Glaucidium passerinum} in old spruce forest, Sweden

Elio Della Ferrera / Common shrew bones {Sorex arabeus} found in pellet of Eurasian pygmy owl {Glaucidium passerinum}

Niall Benvie / Pygmy owl {Glaucidium passerinum} portrait perching on the top of a Norway spruce, Estonia.

Niall Benvie / Pygmy owl {Glaucidium passerinum} perching on the top of a Norway spruce, Estonia.

Niall Benvie / Pygmy owl {Glaucidium passserinum} portrait perching on the top of a Norway spruce, Estonia.

Bengt Lundberg / Eurasian pygmy owl with bird prey {Glaucidium passerinum} Sweden

Philippe Clement / Pygmy owl {Glaucidium passerinum} perched on tree stump, Captive, Bavarian forest, Germany.

Philippe Clement / Pygmy owl {Glaucidium passerinum} perched in tree, Captive, Bavarian forest, Germany.

Philippe Clement / Pygmy owl {Glaucidium passerinum} perched on tree stump, Captive, Bavarian forest, Germany.

Artur Tabor / Eurasian Pygmy owl {Glaucidium passerinum} Stolowe Mountain NP, Poland.

Artur Tabor / Eurasian Pygmy owl {Glaucidium passerinum} Stolowe Mountain NP. Poland.

Bengt Lundberg / Pygmy owl perched in tree with lizard prey in beak {Glaucidium passerinum} Sweden

Bengt Lundberg / Pygmy owl {Glaucidium passerinum} Sweden

Elio Della Ferrera / Pygmy owl, Italy, Europe

Bengt Lundberg / Three Eurasian pygmy owls on tree, June, Sweden

Christoph Becker / Eurasian pygmy owl on branch. Germany. Bavarian Forest National Park, Germany

Dietmar Nill / Eurasian Pygmy owl flying to tree at night, Germany

Bengt Lundberg / Pygmy owl {Glaucidium passerinum} Sweden

Bengt Lundberg / Pygmy owl removes debris from nest {Glaucidium passerinum} Sweden