Describe the free birds surroundings and the effects the surroundings have in the poem "Caged Bird."

At one
moment the free bird is up in the sky and at the next its floating effortlessly down the gentle
current of a river. And then again it takes off and pleases itself with the warmth of the sun.
It drifts and glides as if the whole sky belongs to it. It flies in the endless sky
unrestrictedly and unthwartedly.

and he names the sky his
own

It revels in the pleasant breeze and hears
the sighing treeswhen the soft trade winds blow through...