One manufacturer, AeroVironment (AV) is currently developing products for high-tech defense sector has been developing robots for the bird and the U.S. Defense Research Agency who works for the Pentagon.
The aircraft are powered by batteries made by the Company AeroVironment for Pentagon research body as part of a series of experiments in the field of nanotechnology. Small robots that can fly like a bird was made for use in espionage missions.
Robots weighing 19 grams can fly as fast as 11 miles per hour. Things that can float and fly sideways, moving backward and forward, and it clockwise or vice versa are flown by remote control for about eight minutes.