Klaus Echle / Stone / Beech marten (Martes foina) in chewed tree hole, Black Forest, Baden-Wurttemberg, Germany. June.

Klaus Echle / Stone / Beech marten (Martes foina) juveniles in tree, Black Forest, Baden-Wurttemberg, Germany. June.

Klaus Echle / Stone / Beech marten (Martes foina) juveniles in tree roots, Black Forest, Baden-Wurttemberg, Germany. June.

Klaus Echle / Stone / Beech marten (Martes foina) juveniles in den, Black Forest, Baden-Wurttemberg, Germany. June.

Klaus Echle / Beech / Stone marten (Martes foina) juveniles in den under tree roots, Black Forest, Baden-Wurttemberg, Germany. June.

Milan Radisics / Stone marten (Martes foina) under the car in night time in Budapest, Hungary

Duncan Usher / Beech Marten (Martes foina) in snow, Germany

Duncan Usher / Beech Marten (Martes foina) in snow, Germany

Edwin Giesbers / Beech Marten (Martes foina) Netherlands

Edwin Giesbers / Beech Marten (Martes foina) portrait, Netherlands

Fabrice Cahez / Animal tracks in snow in garden: Beech marten (Martes foina) on right and Red fox (Vulpes vulpes) left, Vosges, France, January

Juan Manuel Borrero / Illustration of threatened species of Spain : Blue whale (Balenoptera musculus), Brown bear (Ursus arctos), Spanish ibex (Capra pyrenaica hispanica), Bullhead (Cottus gobio), Iberian Rock Lizard (Lace...