Why is Timothy Winters belly white but his neck is black?

Timothy Winters, a character from the poem by Charles Causley, has a white belly and a black neck due to the contrast between his innocent, child-like nature and the harsh realities of his environment. The white belly symbolizes purity and vulnerability, while the black neck represents the challenges and adversities he faces in life. This imagery highlights the complexities of childhood and the impact of societal neglect and hardship.