Pteropus livingstonii is one of the world's most endangered fruit bats, with a small population limited to two of the Comoro Islands (western Indian Ocean), Surveys carried out in 1992 and 1993 suggest that the population numbers around 150 individuals. Loss of habitat through deforestation is the major threat to this species. Old World Fruit Bats: An Action Plan for their Conservation recommends captive-breeding of this species as one of 20 priority projects. The FFPS helped fund both the preparation of the Action Plan and the field projects described in this paper.