Answer:
I give people a huge fright but at the end I'm sweet. I normally celebrate at night when there's less heat.
I'm found on Windows yet I am just a decoration. What am I?
I am the home for feathery animals.
I always run but never walk often murmur but never talk have a bed but never sleep has a mouth but never eat.
I only exist when you are here. Where you never were I can never be.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.