Bat flight generates complex aerodynamic tracks

On the cover of Science: A bat, Glossophaga soricina, in flight in a wind tunnel at Lund University, Sweden. The velocity field induced by the wingbeat is shown superimposed and to scale. The bat wake reconstructions have features that have not been observed in similar-sized birds. Membranous and feathered wings of natural and engineered flyers may have significantly different aerodynamic properties. Credit: Lund University, Sweden