Photo: N. Camilleri / Lund University / PA
Current Biology, in The Guardian newspaper, states "Observations of Common Swifts during winter months are scarce and roost sites have never been found in sub-Sahara Africa". But researchers have equipped swifts with accelerometers. Amazingly, the idea that swifts never stop flying is close to the truth, with birds airborne for over 99% of the time during their 10-month, non-breeding period.
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BarrytheBirder
1 comment:
On the other end of the spectrum it would be interesting to see how much time Loons spend in the air.
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