Overabundant wild horses and burros occur across seven western states, on Bureau of Land Management (BLM), US Forest Service (USFS), National Park Service (NPS), and tribal lands, costing taxpayers over \$100M annually. FORT scientists work closely with managers to provide actionable science, such as predictive population modeling, and new tools for monitoring. Here are a few examples:

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• The PopEquus application provides information to help understand trade-offs and inform decisions on horse population management. This tool is currently required for BLM managers to use prior to conducting a gather/removal of wild horses and results are used in their environmental assessments– making this tool critical for conducting management actions.
• USGS also developed and tested the first GPS collar applied to BLM horses, which helps BLM understand seasonal distribution and address conflicts with local landowners.
• The Grazing Exploration Tool centralizes grazing records from the last two decades for livestock and wild horse populations across the Western US. Available to BLM partners, this tool summarizes grazing-related records for management areas, displaying how different grazing metrics may interact with vegetation, disturbance, and wildlife patterns.

Through tools like these, USGS provides support for partners in decision-making. BLM uses USGS science in decision-making, including environmental analysis. State agencies use USGS science as they seek to understand how wild horses may impact hunting. Tribes use USGS science to figure out how many horses they have and how horses impact tribal lands and native wildlife. Additionally, the National Wild Horse and Burro Advisory Board uses USGS science to make recommendations to BLM management.