A Hummingbird's All-Sugar Diet Would Give Anyone Diabetes - Scientists Finally Know Their Secrets
Briefly

Hummingbirds often work harder than previously thought, with metabolic rates indicating they engage in energy-intensive activities far beyond the previously estimated 30% of their day.
The unique adaptations of hummingbirds allow them to cope with extreme energy demands, achieving remarkable feats such as flying upside down and backwards.
Read at Inverse
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