Pemba’s only endemic mammal is a large and critically endangered bat (Pteropus voeltzkowi) called “popo” in Swahili. They spend their days in trees rather than caves and the island’s biggest roosting site, home to some 4000 bats, is at Kidike Sanctuary about 10km northeast of Chake Chake. There's a large population here due to the proximity of a local burial site, which meant the colony was undisturbed. Outside peak season, ring ahead to...