Answer:
I heard of a wonder, of words moth-eaten. That is a strange thing, I thought, weird. That a man's song be swallowed by a worm. His blinded sentences, his bedside stand-by rustled in the night - and the robber-guest. Not one wit the wiser. For the words he had mumbled.
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around.
A reaction to being spooked that takes its name from waterfowl
I am seen in the water. If seen in the sky, I am in the rainbow, a jay's feather, and lapis lazuli.
What is it that given one, you’ll have either two or none?
People take me on walks and I run and have fun. What am I?