From my home deep in the wood.
With teeth that don't devour food,
Around me metal steadily spins.
I wait alone; trapped within.
When an arrow points up to the sky
All night and day those times I fly.
Alone I'm trapped up on the wall.
Tail swings beneath; I wait to call.
I then pounce out to scream and yell
And swiftly dive back in my shell.