Have you ever looked at a hummingbird or a dragon-fly and marvel at just how fast their wings can flap? The actual speed of flight of some of these animals will surprise you.

When the hummingbird pauses to draw sugary fuel from the flowers, his wings continue to beat a grayish blur too fast for the human eye to resolve. By tracking the trajectory and speed of this Anna ...

ANDY TORBET:'As they rotate, the force of gravity pulling the bird down 'is matched equally by the lift generated by its fast flapping wings. ANDY TORBET:'To match the hummingbird's ability to ...

An adult ruby-throated hummingbird may eat twice its body weight in food each day, which it burns up with the high metabolism necessary to sustain its rapid wing beat and energetic movements.