Drib was one of the smallest characters Johnny and Joey met on their adventures, but he sure did have the biggest attitude. The average hummingbird weighs 3.3 grams and is only 3 inches long. Hummingbirds got their name because of the humming sound they make when they fly.  The sound is created by the rapid beating of their wings, which can flap about 50 times per second. These little guys can fly right, left, down, backwards, even upside down!