Information about the status and trend of wildlife habitat is fundamental for meeting the mission and legal and policy requirements of the Forest Service. Habitat monitoring programs provide that information while fostering use of standardized, integrated approaches to produce robust knowledge. Many techniques have been used to monitor wildlife habitat in the Forest Service, but no comprehensive guide existed to provide standardized protocols for habitat monitoring. To that end, external partners and Forest Service managers and scientists from three research stations, eight regions, and the Washington Office published a national, multi-chaptered book. This technical guide provides current, scientifically credible, and practical protocols to inventory and monitor terrestrial wildlife habitat. It has been widely endorsed since its release; for example, in the science review of bioregional monitoring for the Sierra Nevada national forests and by the Association of Fish and Wildlife Agencies for use in state wildlife action plans.