What allows larger vultures to stay aloft for hours with minimal energy expenditure?
Answer
The use of rising columns of warm air known as thermal currents.
The wing structure of large vultures, which is long and broad, provides a high lift-to-drag ratio that is optimized for soaring. Instead of relying on tiring, active flapping, these birds utilize thermal currents—columns of rising warm air. By positioning themselves within these thermals, they can rise to great heights and travel across vast territories while scouting for food, effectively allowing the environment to provide the necessary lift to keep them airborne with minimal physical effort.
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