U.S. Department Of Defense To Use Hummingbirds As Spies

Robotic hummingbirds will be able to discretely enter areas where people would not be able to go without being detected and will look so realistic that people could easily be fooled.
huffingtonpost.com • 7.8.09 @12:37PM
Max Kayden   It looks cool but is ridiculously inefficient. It's going to be loud as hell and it's utterly huge. It's no better/worse than one of those small toy helicopters.

And the toy helicopters have an advantage in that the blades act as gyro-stabilizers by adding a ton of inertia. This thing is flopping all around.   7.8.09 @12:38PM