In the region of Mount Zlatibor in western Serbia, the man who protected the fields of his village from bad weather was called a vetrovnjak; the name is derived from vetar wind. At the onset of a storm, the vetrovnjak would fall into a trance-like sleep. It was thought that his soul then flew skywards to fight against some black bird which led the storm and hail clouds. After he woke up, he had to rest for some time to restore his physical strength. It was believed that a vetrovnjak could take the bad clouds over the estate of a man with whom he was in a conflict.