BoingBoing has a video of a tiny camera-carrying ornithopter developed at the Delft University of Technology. The ornithopter has a 35 cm wingspan and can carry a camera and video transmitter for 17 minutes. The next model will have a 10 cm wingspan.
As usual, the researcher “suggests that it could be used to locate victims in collapsed buildings”. If that happens before they’re used for police surveillance or military targetting, I’ll be pleasantly surprised.