The Maya Mountain Massif (MMM) is a significant landscape within Mesoamerica. It encompasses fourteen protected areas and at least 37 globally threatened species. The conservation efforts are constrained by critical biodiversity data gaps, inconsistent monitoring, and limited capacity to manage existing data. The project “Biodiversity Monitoring and Assessment for Priority Species in the Maya Mountain Massif” aims to enhance biodiversity conservation through improved monitoring, capacity building, and community engagement. Key actions include co-developing standardized monitoring protocols for birds, mammals, and forest trees with protected area managers and validated for integration into the National Biodiversity Monitoring Program. Delivering capacity-building workshops on monitoring protocols and conducting baseline assessments at two under-monitored forest reserves in the MMM. These actions will enable evidence-based conservation for protected areas in Belize.