The original project goal for the Skull Mountain Project was to investigate the effects of natural disturbance regime (frequent fire return cycle) on stand structure, and ultimately on biodiversity (indicated by mule deer, bird communities and vegetation). Forest management guidelines for dry Douglas-fir dominant stands were intended to be developed based on the results. The original project goals have not changed, however, the wildfires of 2003 necessitated changes in the project plan. Prior to the fires, operational harvest trials intended to best mimic the natural disturbance regime had been completed and up to 3 years? post-treatment mule deer winter range and vegetation data had been collected. After 2003, the project plan was adapted to test the effects of the actual fire. Mule deer winter range and vegetation were compared pre and post-burn in three treatments: original operational harvest, uncut forest (control), and post-burn salvage with large tree retention (pre-burn was uncut). The post-burn phase of the project, however, would best be managed in terms of planning if the pre-burn phase is fully understood through completion of analysis; this was recommended in the PWC audit of the project in spring 2005. Therefore, the pre-burn phase of mule deer winter range and associated vegetation analysis and interpretation will be completed, and the results will be applied, where necessary, to the current project plan, including establishing timelines and project completion. The data from this project was cleaned and analyzed in fiscal 2005-06.