käsivarri

Käsivarri, also known as the European pine marten, is a medium-sized mammal belonging to the weasel family. It is native to Europe and parts of Asia, inhabiting a variety of habitats including forests, woodlands, and mountainous regions. The species is characterized by its sleek, agile body, short legs, and a bushy tail, which is often held upright like a flag.

The European pine marten has a distinctive coat that varies in color depending on the season. During the summer, its fur is typically a reddish-brown, while in winter, it turns a lighter, almost white color. This color change is an adaptation to camouflage, helping the marten blend into its surroundings. The marten's diet consists mainly of small rodents, birds, and their eggs, as well as insects and berries.

One of the most notable behaviors of the European pine marten is its use of a distinctive call, which sounds like a high-pitched kee-kee-kee. This call is often used to mark territory and communicate with other martens. The species is also known for its climbing abilities, often scaling trees to escape predators or to reach food sources.

The European pine marten plays an important role in its ecosystem by controlling populations of prey species. It is also a popular game animal in some regions, although hunting regulations vary widely. Conservation efforts are in place to protect the marten's habitat and ensure the survival of the species, which is currently listed as Least Concern by the International Union for Conservation of Nature.