In the strict array, the flying speed of geese is 7 1% higher than that of single flying. The V-shaped goose has the most arduous task and needs to bear the greatest air resistance, so the leading goose will rotate every few minutes, so that the goose can fly a long distance without rest.

The two positions at the tail of the stern array are the easiest, and the strong geese let the young, sick and old geese occupy these labor-saving positions. The array kept howling, which was the strong goose encouraging the backward companions. If a wild goose falls behind because of fatigue or illness, it will not abandon it. They will send a healthy wild goose to accompany the laggard to the ground until it can continue to fly.