Bumblebees Carry Heavy Loads in Economy Mode (image) University of California - Davis Share Print E-Mail Caption Bumblebees can fly while carrying up to their own bodyweight in nectar. A new study shows how bees can generate more lift by flapping their wings faster, or by using an energy-efficient economy mode. Credit Andrew M. Mountcastle Usage Restrictions May be used with acknowledgement. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.