Markus Varesvuo / Pygmy owl (Glaucidium passerinum) perched in lichen covered tree. Helsinki, Finland. February.

Sven Zacek / Eurasian pygmy owl (Glaucidium passerinum) perched on snow covered branch in evening light. Vorumaa, Southern Estonia. November.

Michel Poinsignon / Eurasian pygmy Owl (Glaucidium passerinum) perched on conifer branch, Vosges Mountains, France, June.

Wim van den Heever / Pearl-Spotted Owl (Glaucidium perlatum) perched on a branch. Okavango Delta Botswana

Donald M. Jones / Mountain Pygmy-Owl (Glaucidium gnoma), western Montana

Donald M. Jones / Mountain Pygmy-Owl (Glaucidium gnoma) with mouse prey, western Montana. Sequence 1 of 2

Markus Varesvuo / Pygmy Owl (Glaucidium passerinum) perched in pine tree. Hyvinkää, Finland. January

Richard Du Toit / Pearlspotted Owl (Glaucidium perlatum) on branch, Kgalagadi, South Africa

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

Gerrit Vyn / Northern Pygmy owl (Glaucidium gnoma) adult in tree in winter, Okanogan County, Washington, USA, November

Donald M. Jones / Mountain Pygmy-Owl (Glaucidium gnoma), northwestern Montana

Donald M. Jones / Mountain Pygmy-Owl (Glaucidium gnoma), northwestern Montana. Sequence 1 of 2