Lift principle
Lessons from Great Frigatebird
Let the air carry.
Effortless Ocean Soaring

Core lesson
Use the air that is already rising before spending your own strength.
Biological basis
Great Frigatebirds have extremely long wings and low wing loading, allowing them to soar over tropical oceans for long periods with minimal flapping. Males also display inflated red throat pouches during courtship.
Best use cases
Where this lesson tends to be most useful in practice.
EfficiencyLeverageLong-range workConserving energyUsing natural lift