Answer:
The part of the bird, that is not in the sky, Which can swim in the ocean and always stay dry. What is it?
It is a popular afterlife destination where you want to send people when you're mad at them.
What has no hands but might knock on your door, and if it does you better open up?
Makes arrows fly and kites soar!
They are the group who manages the winged engines of war.
What never gets any wetter no matter how hard it rains?