This example displays the distribution of flower species as a pie chart, showing the count of each species. The visualization uses D3.js v7 to load a CSV dataset, aggregate occurrences with `d3.rollup`, and generate pie slices with `d3.pie` and `d3.arc`. Labels display counts within each slice, while a color-coded legend and axis labels contextualize the data. The SVG rendering includes a title and uses a categorical color scale for species identification.