Rereading the second stanza shows the stark contrast between the bird locked in captivity and the free bird in the first stanza.

The caged bird experiences fear and repression since the only action he can perform is vocalizing through singing. He is unable to spread his wings or move around, so the voice is the only part that has not been restrained.

As a result, the song is not a song of happiness or freedom, but instead it is a song of suffering and fear as a result of his captivity.

As we read through the alternating stanzas, the free bird enjoys a lot of power because of his freedom. He is able to traverse the environment and think of the wonders of the world–the breeze or fat worms. However, the bird held in captivity can only sing a song of fear–not knowing what will happen to him or who will hear his song. The captive bird longs for freedom but is left with an unfortunate situation that he has no control over. He is left powerless in contrast to the free bird.

Rereading the second stanza shows the stark contrast between the bird locked in captivity and the free bird in the first stanza.

The caged bird experiences fear and repression since the only action he can perform is vocalizing through singing. He is unable to spread his wings or move around, so the voice is the only part that has not been restrained.

As a result, the song is not a song of happiness or freedom, but instead it is a song of suffering and fear as a result of his captivity.

(Please read solution regarding the freedom and power analysis)