Answer:
What is never used unless it's in a tight place?
What travels from house to house and is sometimes narrow and sometimes wide but always stays outside?
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own.
A nut cracker up in a tree.
Both old people and owls are said to be possessing this trait
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.