This interactive bar chart visualizes the distribution of tree species from a CSV dataset, displaying the count of each species alongside tooltips that reveal average height and circumference. Built with D3 v7, the visualization employs `d3.csv` for data loading, `d3.rollups` for aggregation, and `d3.scaleBand` and `d3.scaleLinear` for axes. Bars animate upward on load, use a green sequential color scale, and respond to hover with opacity changes. The SVG rendering includes rotated x-axis labels and a styled title.