Bird to Rocket

If i were a bird, I would fly to the sky, Fly freely.
But, I am a bird!
So i'll fly like a rocket!
Fly high, high and higher! Higher than you thought
Now, something crashed the rocket!
It's a big crashed! Bigger that you were thought.
The engine broke, it couldn't fly anymore.

The rocket became a bird again, just like the old times.