Analysis of Perspective

I came across a caged bird
Hanging from a tree,
No one around could claim the bird,
So I decided to set it free.
With a chirp of gratitude,
The sparrow off and jumped,
Flying in its newfound freedom,
Its wings flapping as they pumped.
Soon, later, I began to realize
That I had done a good deed,
I felt warm, happy,
And that thought sprouted a seed.
Maybe that caged bird
Hanging from a branched tree,
Maybe, just maybe,
That little bird was me.