Answer:
Although my cow is dead, I still beat herย What a racket she makes.
What do you fill with empty hands?
Youโll have me at night and if you remove the first letter I denote the top, such as on a train
Both old people and owls are said to be possessing this trait
What is as big as you are and yet does not weight anything?
If itโs information you seek, come and see me. If itโs pairs of letters you need, I have consecutively three. What am I?