The term GEESE FLOCK FORMATION refers to the V-shaped formation that geese fly in when migrating. This formation is thought to be beneficial for the birds, as it allows them to conserve energy and fly further distances. The V-shape is created by the lead bird flying slightly higher than the other birds, creating an aerodynamic effect that reduces drag and increases lift. The other birds in the flock take advantage of this effect, allowing them to fly with less effort. The V-shape also allows the birds to communicate more easily, as they can see each other more clearly.