Sci & Tech● Low46m ago · Nov 8, 2026, 8:05 AM
Wild birds rewrite the rules of flight efficiency: a study reveals the power of the sky's 'free fuel'
GlobeAlert Desk · curated from Clarín · global
The Andean condor and the trumpeter swan weigh almost the same, but the condor spends about 80% less energy per kilometer traveled. The largest study so far on the cost of flight in nature shows that flying can be cheaper than swimming.
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