Geese usually fly in a neat zigzag or zigzag, which is a manifestation of the instinct of the group. Because it is conducive to defending against enemies. Geese are always experienced old geese as Captain and fly in the front of the team. In flight, the geese in charge of the team consume a lot of rest, because they often exchange positions with other geese. Young birds and weak birds are always inserted in the middle of the team. 
The weak can't be the wild goose leading the team
 when flying, they will not be attacked by the enemy