With funding from USAID, and in partnership with Winrock International, Conservation International undertook biodiversity surveys of Prey Lang between June 2014 and February 2015, in cooperation with the Forestry Administration of Cambodia. The objectives of the survey were to determine the biodiversity values and conservation priorities within Prey Lang, identify threats, and produce recommendations for the alleviation of these threats. The survey covered vegetation, mammals (including a specific study of bats), birds, amphibians and reptiles. This is the final report with the results from the surveys.