Flying in form
Geese often fly in a V formation on a long flight. The bird in front does much of the work needed to fly through the air, and the other birds benefit from this. When the bird in front tires, another takes its place as leader. It is a little like walking in freshly fallen snow. This is hard work, but if you can walk in already made footprints, it is less difficult to forge your way through the heavy snow.