Video Shows Robo Raven Diving, Spiraling, Flipping--and Getting Attacked by a Hawk

Robo Raven is a truly clever robot flier--it can dive, spiral, even back flip. Although up close, Robo Raven's reflective body doesn't look very hawk-like, its wing motion and silhouette are realistic enough to fool a hawk into attacking it. (Not unlike a Liquid Robotics Wave Glider that was "investigated"