Migratory birds have grasped the sky at night and day quite differently than humans and other animals. They are not just ten times better, clearer, farther and more widely seen all around, but observed a dense network of geomagnetic lines stretching at a great height above the planet from south to north. This celestial network is very similar to the patterns on the fingers of human, and each sky on Earth has its own unique pattern. You can only imagine how easy after that to navigate for birds when they constantly see high above themselves those sky's unique patterns and behind them the trapped stars, constellations, planets of the solar system, the motion of the moon and its phases.
For migratory birds, these lines as signs of love and life, they point the way to the south in autumn when they fly for the wintering, and on the contrary, in spring, these lines help birds to return through shortest way back to their homeland, to find the exact location of old nests.
However, pigeons have used these lines better than all other birds. They have not glided in spring to the north and in autumn to the south - strictly along these lines.
Instead, they preferred flying through these strings and play with as if on a kind of some celestial super harp, moving in the most diverse directions around the planet and always unerringly orienting in any place and quickly returning at home by the shortest route if it necessary.
A dove named Nazik from my childhood, played on this celestial harp, imagining one day fly away with Innaet to an incredible journey across the whole universe towards other worlds and constellations.