Unmanned Aerial Spy Vehicle That Imitates Hummingbird

California based firm AeroVironment Inc. has successfully developed an unmanned flying vehicle which moves like a hummingbird. The robotic vehicle has a physical appearance which will make you confuse it with a live hummingbird. It flies, flaps its wings, rotates, flies sideways, climbs, descends and hovers around a place with so much precision and realistic [...]

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