Have you ever seen a video of Steven Seagal or similar Aikido masters performing seemingly effortless take-downs against waves of opponents? This bird program is very similar: impressive in a demonstration and totally useless in real life.<p>The key is that in the demonstration, only willing opponents are used. Notice that the drone in the video is completely motionless? In real life, if the pilot sees the bird coming at the last moment, it will tilt the drone to try and accelerate away. This is highly, highly likely to result in the bird's outstretched feet getting lopped off.