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Nightjar wings reveal a trade-off between hunting slowly and traveling far
Phys.org reports broad wingtips likely aid slow insect-hunting flight, while nightjars generate lift less efficiently at higher speeds.
TLDR
Phys.org describes European nightjars as nocturnal migrants that travel between Europe and southern Africa each year. It reports that their broad wingtips likely help them fly slowly while hunting insects, though they generate lift less efficiently at higher speeds.
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