In winter, long hairs grow between the toe pads on pine martens' feet. These keep the feet warm and enable the animals to travel on snow. Pine martens have long, bushy tails that are one-third of their total length. Like other species in the weasel family, they differ in size according to sex. The female is about three-fourths the size of the male.
Fishers live in similar habitat and have similar tracks.
Stone martens are a species native to Europe and Asia. They were released in southern Wisconsin in the early 1970s, where they've established a breeding population. Habits Little is known about the habits of pine martens because they're most active at night. They'll pursue prey, such as red squirrels or chipmunks, up a tree and may climb trees to avoid danger. Martens move across the ground in a zig-zag fashion, often followed by a series of jumps.