"I Know Why the Caged Bird Sings" talks about the racism and segregation between white people and the colored people, and more specifically the relationship between the free white man and the black slave. In the first stanza, Angelou uses words like "leaps" and "floats," to show that the white man could do practically whatever he pleased. While describing the caged bird, however, she placed the word "but" at the beginning which automatically gives you a negative feeling. Also, the caged bird "stalks" and "his wings are clipped and his feet are tied." It shows that he is trapped, which is also shown when it says "his bars of rage" He's definately not happy or free. Then she says that he sings, which doesn't really go with the rest because you usually sing when you're happy, but it says he sings "with a fearful trill" "the caged bird sings of freedom" he isn't singing because he's happy, but he sings as a call out to freedom.
About a bird that is trapped and can't do anything for himself. A bird that is calling out for help but nobody hears him. When he sangs out.