At first glance (and perhaps not too closely) it might seem like a real hummingbird, but it is the new spybot made by DARPA: this flying robot is equipped with a video camera capable of transmitting images from a distance.
The dimensions are still excessive (but I am very demanding): 16 cm of wingspan and 19 grams of weight. Yes, it's not a Boeing, and No, it's not over here.
We will see them fly, boys: and one fine day, we will not even see them with the naked eye.