How do hummingbirds hum?

Usually, the only sound of a hummingbird is the whirring or humming sound it makes with its rapidly beating wings.

A hummingbird flaps its wings nearly 60 times in the time it takes you to blink your eyes.  The wings move so fast that only a misty outline can be seen.  They make the air vibrate, and we hear a humming sound.

The delicate and brightly colored hummingbird usually measures less than four inches from bill to tail and weights about as much as a copper penny.

No other bird can fly in so many ways as the hummingbird.  It can quickly dart up, down, backward, forward or it can hover nearly motionless in the air like a helicopter.

The active little bird must eat every 10 to 15 minutes it is awake to maintain its tiring pace. It flits from flower to flower and hovers above each blossom.  

It sips the sweet nectar through its long, tube-shaped tongue and picks up any small insect that it may find in the flower. Most, but not all hummingbirds are tiny.  The largest is the giant hummer.  It grows nearly 9 inches long.-Dick Rogers

How Does A Frog Catch Its Food?

Frog

The frog catches insects and other small food animals on the sticky tip of its long tongue.  All summer long, the little frog squats, motionless, on the bank of a quiet pond or brook and watches for passing insects.

If a fly or cricket passes within reach, the frog’s long tongue will snap out like a flickering whip, so fast that you can scarcely follow the action.  The insect is caught on the sticky tip.  Just as quickly the frog flips its tongue back into its mouth.

The frog’s tongue is fastened at the front of its mouth, not the back, so that it can be flipped out a long way.  The frog’s mouth is equipped with feeble, practically useless teeth, which are present only in the upper jaw.  So it must live mostly on small creatures that it can swallow in one gulp.

Frogs also eat earthworms, spiders and minnows that they catch in the water.  Toads capture their food in much of same way frogs do.  Frogs and toads help man by eating many harmful insects to be found in gardens and on farms. - Dick Rogers