Vitality ratio
Intended function
Performance competency
Pelicans often cooperate in their airborne travels. During flight, as they follow the winds either to the north or south along the shore, group wing unfolding generates a vortex saving significant amounts of energy expended.
“Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.” – Leonardo da Vinci