Answer:
This thing all things devours: Birds, beasts, trees, flowers; Gnaws iron, bites steel; Grinds hard stones to meal; Slays king, ruins town, And beats high mountains down.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard.
What has a spot and is very bright, is sometimes, red, white, blue, yellow or green and is often blinding.
When the creeper passes, all the grass kneels
Be sure to shout for its answers are weak, but there is no language it cannot speak.
I can only be played on a windy day
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?