Answer:
I am a pretty one, fluttering in the pale blue sky. Delicate, fragile on the wing, indeed I am a pretty thing. What am I?
They come out at night without being called. They are lost in the day without being stolen. What are they?
I am made by nature soft as silk; A puffy cloud white as milk; Snow tops this tropical crop; The dirtiest part of a mop.
I am heavy forward but backward I'm not.
I sleep by day, I fly by night. I have no feathers to aid my flight. What am I?
I am rarely touched but often held. If you are smart you'll use me well. What am I?