A pie chart visualizes wildlife population percentages across different states in the United States. The chart maps each state’s population value to a colored arc slice, with a legend listing state names and their corresponding percentages. Data is loaded as CSV via D3’s `d3.csv` from a GitHub Gist, while `d3.pie`, `d3.arc`, and `d3.scaleOrdinal` generate the segments and colors. The SVG output renders slices and a separate legend group, with numeric labels formatted using `d3.format`.