This bar chart displays monthly fire occurrences in California, revealing a clear seasonal pattern with peak incidents in July (391 fires) and lowest counts during winter months. The visualization aggregates wildfire records from a CSV dataset loaded via `d3.csv`, then uses `d3.rollup` to count occurrences per month and `d3.scaleBand`/`d3.scaleLinear` for positioning. Bars are rendered as SVG rectangles with hover effects changing fill color to orange. Axis labels and count annotations are added via D3’s selection methods.