When geese fly they fly in a V formation or a single lin, they are drafting off the one in front with the same way racecar drivers in F1 and Nascar do to pick up speed. The lead or starting bird helps the others to pick up speed by creating a turbulence wave that helps lift the birds behind the leading bird, which is normally a female. The birds farther back in the formation need less energy to fly so the birds keep switching position to make up for the fatigue. The Wright brothers were inspired by this system for aviation.
Did you know a Geese is a large group of Goose and sometimes people refer to female Goose’s as Geese and male Goose as Gander. The baby birds are called goslings, a group of Geese on the ground is a gaggle.