Why do geese fly in a V?

I never knew the answer for dis til yesterday n one of my friend enlightened me as she found it in suki sivams book... And here comes d answer.,


First, it conserves their energy. Each bird flies slightly above the bird in front of him, resulting in a reduction of wind resistance. The birds take turns being in the front, falling back when they get tired. In this way, the geese can fly for a long time before they must stop for rest.

The second benefit to the V formation is that it is easy to keep track of every bird in the group. Fighter pilots often use this formation for the same reason.