Movie 3

Side view of two scenting bees flapping in tandem. This configuration is also common during ventilator scenting bees. While the flow generated by individual bees may persist for only a few body lengths, bees fanning downstream can prevent the air from decelerating, leading to long distance transport. Slowed down approximately 250 times.

Wings as impellers: honey bees co-opt flight system to induce nest ventilation and disperse pheromones

Jacob M. Peters, Nick Gravish, and Stacey A. Combes

Journal of Experimental Biology 2017. 220:2203-2209; doi: 10.1242/jeb.149476