Jackdaws flap their wings to save energy

ENN
Aug 11, 2017, 11:05 am43 pts
For the first time, researchers have observed that birds that fly actively and flap their wings save energy. Biologists at Lund University in Sweden have now shown that jackdaws minimise their energy consumption when they lift off and fly, because the feathers on their wing tips create several small vortices…

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