I watched how the crows were entertaining.
A strong wind. On the field at the concrete fence sits a few crows. From time to time, one of them takes off and tries to fly against the wind blowing in the direction of the fence. But the forces are not equal, none can surpass the wind, and it takes it to the side where it sits. Then the lost bird takes off the fence, makes a wide circle and returns to the other players. The other crows at this time are bullying. It seems that you even hear this noise repeatedly:"Low-a-k!"