The writers of Harlem Renaissance attempted to spread the word about beauty and richness of the work done by African Americans. In the 1920s, this took place, and America started recognizing the work done by African Americans. This movement laid the foundation of the Civil Rights movement.
I think it was named the bald eagle because of the contrast in colors. The body is brown and the head is white, like you said, so when it is flying it looks bald because the head is lighter. I think that might be the reason
The theme of a poem is the main idea or the subject
