A wind rose diagram displays the frequency of wind speeds across 16 compass directions, with stacked colored arcs representing speed bins from 0–1 to 6+ knots. A linked date histogram below shows the monthly total of dead and missing migrants, with a brushable time range that filters the wind rose. The visualization combines React components for the histogram axes and marks with D3 v4 scales, including a custom radial scale from d3-scale-radial.js for the circular layout. Data comes from a CSV file, and rendering uses SVG paths and rectangles.