Answer:
I have many feathers to help me fly. I have a body and head, but I'm not alive. It is your strength which determines how far I go. You can hold me in your hand, but I'm never thrown.
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not. What is it?
You must keep this thing. Its loss will affect your brothers. For once yours is lost, it will soon be lost by others.
I can be written, I can be spoken, I can be exposed, I can be broken.
I have a neck but no head. I have a body but no arm. I have a bottom but no leg.
What did the piece of wood say when he saw the screwdriver and screws approaching?