I'm worked by owls Who shun the sun Mind the gap now My word, they have none

I leave a trail you cannot see, yet clever noses follow me. A hound may chase where I have been, what am I drifting on the wind?

A snake, a snake Snake, a snake Oh, it's a snake Mushroom, mushroom. Who's missing?

I silence rivers, lock the lake, yet vanish when the warm winds wake.

In the grass I stand so bright, A yellow sun in morning light. But when I turn all white and gray, You’ll huff and puff me far away.