A few years ago a friend of mine bought a new house. It had Hummingbird feeders in the back yard. The house is gorgeous, but I couldn't wait to see the Hummingbirds feeding.

They are the smallest of birds, ranging from 3 to 5 inches, and their heart rate can reach

they are always hours away from starving to death

as high as 1,260 beats per minute. Which is simply incredible, but the thing I find most frighting about Hummingbirds is that they are always hours away from starving to death. Since their metabolism is so high they have to eat continuously. They actually eat more than their own weight in nectar each day, which means they have to visit hundreds of flowers each day, which means they have to continuously flap their wings and move. If they don't eat enough in the day time, they'll starve to death overnight.

So they're like natures "Crank"

Take 3 minutes to see how Hummingbirds fly in the wind and rain, as well as hover.