Every spring and autumn, millions of birds travel on a long journey. What unknown force forces them to fly over the mountains, cross the oceans, travel thousands of kilometers to reach the place of wintering? And why do feathered travelers return to the same places? Scientists at the Chokpak Ornithological Hospital for half a century have been studying the mysteries of the seasonal flight of birds. Watch the program “Talk to Nature” with Sergey Ponomarev right now!
