Answer:
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
What is the freedom of birds and the pen of old men?
Runs smoother than any rhyme, loves to fall but cannot climb.
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
This only turns over once you have traveled very far. What is it?
Break me and I am better immediately set and harder to be broken again.