Why do people put roosters on top of wind vanes?

In Slavic and Baltic mythology rooster, or more specifically a fiery rooster, which is a sort of Slavic Fenix was an animal of Perun, Perkons, Slavic and Baltic thunder god. Roosters, particularly black roosters were sacrificed to both Slavic Perun and Baltic Pērkons, especially during droughts. read more

Roosters, particularly black roosters were sacrificed to both Slavic Perun and Baltic Pērkons, especially during droughts. Placing rooster on top of the weather vane was supposed to protect the house from thunder. Interestingly there is a belief in Serbia that the Devil runs away from the cross but is even more affraid of thunder. read more

The answer to that question dates back more than a thousand years, perhaps even longer. Ancient Origins of Weathervanes. Originally, people tied strings or cloth to the tops of buildings so that they could see which way the wind was blowing. read more