This Bird Can Remain Airborne For 10 Months Straight
These birds fly from Europe to sub-Saharan Africa, but they don't touch down on the continent. The researchers say new findings raise questions about "when and to what extent swifts need to sleep."
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Health & Science - October 28, 2016 at 04:38AM - This Bird Can Remain Airborne For 10 Months Straight
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