Do you know why migratory birds fly in a V shape?

Do you know why migratory birds fly in a V shape?

This method makes the birds travel the largest possible distance by taking advantage of the total air thrust created by the entire flock, thus reducing the effort expended during flight.

This means that when each bird hits the air with its wings, it generates energy that helps it fly and also helps the next bird, which enables all the birds of the flock to cooperate in the flight process.

Studies have shown that this flight formation enables the entire flock to travel a distance of 71% longer than if the bird flew alone...

Not only that, but the researchers found that the birds alternate in their places in the flock in a strange way. When one of the birds feels tired, it moves back so that it can exploit the air current resulting from the flock as a whole, thus reducing the effort expended to the maximum degree. Then, after a while, it returns to its place again, giving way. The way for another bird to rest.

All this while respecting the safety distance.