Tom Robinson, another character with an avian name (Robin-son), serves as the film’s other mockingbird.
Having visited the home of Mayella Ewell on numerous occasions with the honorable intent to help her with household chores, he eventually becomes the recipient of her sexual advances.
Heavy symbolism is placed on the idea of innocence throughout the picture, a theme represented by the mockingbird and reinforced through the creative construction of character names.
The mockingbird is an image of helplessness that needs protected, only existing as a piece of purity.
The Finch family is comprised of liberal lawyer patriarch Atticus and his two children, Scout (Mary Badham) and Jem (Phillip Alford).
Their surname, Finch, draws connection to the mockingbird as a similar-looking small bird.
His sentence is the product of extreme fear and group prejudice, where townsfolk would rather agree to an obvious lie than life with the social trauma of one of their white women having thrown herself at a black man.
Robinson doesn’t survive the film, he’s shot and “accidentally” killed after the trial in an attempt to flee.
He’s described as a vicious mongoloid, chained up in his dark and gloomy house to keep his malice away from the citizens of Maycomb.
Though never seen, he manages to leave Jem small trinkets inside a hole in the trunk of a tree, which Jem collects and keeps in a box.