Obviously the military applications of robotics are serious business – any way to reduce human casualties is very welcome in these uncertain times. But a recent development by the United States Army takes robotic camouflage to a whole new level. In collaboration with scientists from the University of Maryland, they created a robotic raven made from carbon fiber, 3D printed plastic, Mylar foil and foam. The bird is so realistic that hawks and other predators have been seen attacking it in flight. Capable of carrying a tiny video camera and taking wing in winds of over 10 miles per hour, this could be the next evolution of spy drones.