Who is referred to as a free bird in the poem "Caged Bird" by Maya Angelou? Why?

The free bird is one
that "leaps" onto the wind and "floats downstream" on its breezes. He
"dips his wing" in the orange rays of the sun and "claims" the sky as his
own. He fears nothing, and he seems to have no cares in the world, confident in his ability. His
life is dramatically different from the caged bird that "stalks" around his confines
and sees through "bars of rage"; his "wings are clipped"he is unable to fly
at alland his "feet are tied" so he cannot run. He is not even given the opportunity
to test his ability.

It is the caged bird who sings as a result of his
terrible confinement and his desire for freedom. It seems, then, that the caged bird is symbolic
of anyone who is limited or prevented from attaining freedom or independence, while the free
bird is not limited in this way. The free bird possesses privilege, the magical tacit currency
that permits it a freedom that the caged bird lacks, a freedom that allows it to even take its
freedom for granted because it has never known anything different. This could be white
privilege, the privilege conferred on a person due to their wealth, or male privilege even. The
free bird is a privileged member of society.