Answer:
A reaction to being spooked that takes its name from waterfowl
It's usually found dried, but often kept slicker. Above another need, it's said to be thicker. What is it?
The stack just might be sent all over. Full of what's new, yet it's nearly obsolete.
I fly through the air on small feathered wings, seeking out life and destroying all things.
Lovely and round, I shine with pale light, grown in the darkness, a lady's delight.
What is so fragile that saying its name breaks it?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?