They are speakers of the forest. In time long recorded they've been people of the forest but this view point is the pinpoint view of common masses. Satyrs with their innate ability ot easily traverse mountains, tundra, plains and beyond. 

"We're the natural people of the land, able to walk amongst bristle and beast alike, and share in the same senses that connect them all." These satyrs would use their natural gifts to speak for the beasts of the wild, predicting shifts of the earth. Many Satyrs would choose a nomadic life to bring the revelry of the land in spring, bounties of the land in fall and warning of the winter winds or worst case... cause the cleansing flames of the summer sun. 

The common folk created many appeasement practices like parades, feasts, and even decorative totems to entice a Satyr to stay for the season. As a natural guardian the satyr would keep dangerous creatures from coming close to farms or friends. It is said that the horns of a Satyr can warn you of oncoming natural disasters. Woe be it to anyone foolish enough to try to capture a Satyr against their will, or refuse the warnings of one for a satyr voices the wrath of nature.