Why are there more birds on one side of the v than the other?

In a V formation, birds tend to cluster more on one side due to wind conditions and the leader's position. The side with more birds often benefits from the updraft created by the lead bird's wingbeats, allowing them to conserve energy more effectively. Additionally, birds may prefer to balance their formation based on individual strengths and dynamics within the flock. This behavior helps optimize flight efficiency and navigation during migration.