While the bird was trapped inside the cage, Dunbar and other African Americans were trapped within racial barriers. They were unable to experience the majority of the wonders in the world because of how oppressed they were. It is notable that he is able to relate to the bird when he wrote, "I know what the caged bird feels!"
The main ideas and the description of the bird in the poem may relate to African-Americans who lived during that time because African-Americans were most likely desperate to attain their own freedom in the world. They most likely did not want to be trapped within racial barriers, and they might have wanted to have the same amount of rights that "white" people