American Marten

American Marten: Pine martens are agile climbers and spend much of their time in trees, where they prey on squirrels and chipmunks. They are a member of the weasel family. An American marten group is called a 'richness'. During cold weather, martens have a hard time keeping warm, so they tunnel deep under the snow into tangles of tree roots for warmth. Threatened by logging of old growth forests.