Squirrels have a very thick winter coat. The summer coat partly remains as an undercoat, and a longer thicker winter coat grows in the gaps. On cold winter nights squirrels curl in to a ball in the nest. Their long tail is a vital insulation.
Kuusamo, March 2008
Technique: Canon EOS V, Canon 4/600 mm, + 2X converter, hide, Fuji Provia 400