While the gashyrr wasps possessed the ability to fly, drones do not possess such an ability, the wasps' wings and legs becoming fleshy, webbed membranes that keep drones steady while in motion. Drones move by hovering above the ground using a float bladder (factoring this in, a drone stands nearly as tall as a terran wearing CMC armor). This peculiar organ emits a low-frequency energy field that disrupts gravity around the drone. The creature then swims through the air by undulating its body and using some of the excess energy as a means of propulsion. Dedicated analysis by Terran Dominion scientists has revealed that the aforementioned membrane is capable of expanding rapidly with a proper source of nourishment (e.g. creep). However, the gashyrr wasps' worker caste's ability to secrete compound B-5801 was maintained in a sense through genetic trimming and manipulation, allowing the drones themselves to become the biological focus of zerg structures. Drones are very malleable, and even when they hatch among dangerous objects like rusted terran rubble, the drone's flesh will adapt to assimilate the foreign materials into its body.