Caged Bird

I'm in a cage, with plenty of doors- I do not know from which to get out. Out of the cage, I see the world- different from every separate door. I'm a caged bird, with a mystery yet unsolved- where the future of a caged bird will be. Where to fly, where to reach, it's not something a caged bird will know. I have the keys, opening every door- but only one I am to pass. Each one is a way to the world, but each too good to remain in dark. The world calls me, different is each call. While some ready to drag me out, the rest remains to be fought and won. None tells me, where to go without doubt. I'm a caged bird, with a mystery yet unsolved- where the future of a caged bird will be. Where to fly, where to reach, it's not something a caged bird will know.