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Scientists shed new light on how seabirds cruise through air and water


The study reveals that these birds, from the Alcidae family which includes puffins, murres and their relatives, produce efficient propulsive wakes while flying and swimming. This means that the animals likely spend relatively low amounts of metabolic energy when creating the force they need to move in both air and water. The findings suggest that alcids have been optimised for movement in very different environments through the course of their evolution.

"Birds that use their wings for 'flight' in air and water are expected to fly poorly in both environments compared to those that stick to either air or water ...


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