This is a planned 2-year Study. In 2015 and 2016, the SDNHM, under contract to USGS, will survey areas with known pallid and Townsend's big-eared bat occurrences in MUs 3, 4, 5, 6 and 8 as identified in the MSP and in other high potential sites based on previous survey work by USGS and the SDNHM, including areas in North County and potentially areas adjacent to the MSP.