Why do birds fly in a V formation?
Birds fly in a V formation because when they fly in this pattern, they are able to extract the maximum benefit by putting in less effort. This is because when a bird flies, the tips of both its wings create a rotating vortex. Due to this, the air right behind the bird gets pushed downwards, while the air behind this and off to the sides gets pushed upwards. This creates specific zones, known as upwash zones and downwash zones. Birds flying in these zones can continue flying by putting less efforts.
