stagnant freshwater like household rainwater cisterns, used tires, wells and, of course, the Buada Lagoon, albeit only slightly more seriously than towards the seashore. These mosquitos, beyond simply being an annoyance to the local populace at dawn, also carry a parasitic illness, filariasis, although the incidence among the local people is not high. The only two predators that feed on these mosquitos are fishes, the milkfish and the gambusia, which feed themselves on the larvae, as well as two species of Odonata. Three species of fruit flies, the oriental fruit fly, the Pacific fruit fly and the mango fly, were present before the 2000s and caused considerable damage to farms. The lands around the Buada Lagoon have been affected by these flies, who have found a breeding ground in the many fruit trees grown there. The flies have also been the object of eradication efforts, some of which have met with success, such as the one against the oriental fruit fly, which was eliminated in 1999. Birds Birds, particularly seabirds, are Nauru's most visible animals, and some stop there in great numbers during their migration or for nesting. Only one bird species, the Nauru reed warbler, is endemic, but it is threatened with extinction by habitat destruction, even though it has been colonizing areas recently reforested now that phosphate deposits are no longer being exploited on the island's plateau. This species likes shrubby areas in the tropical rainforest, farms and gardens, including the area around the Buada Lagoon, which are associated with those three habitats. Fishes Three fish species are found in the Buada Lagoon: milkfish, Mozambique tilapia and gambusia, those last two having been introduced to Nauru, the tilapia to afford the local people a new food source, and the gambusia to help eradicate mosquitos. In certain years, Nauruans traditionally practised pisciculture by catching milkfish in the island's inshore waters (by some definitions, the actual lagoon, just behind the offshore coral reefs) and releasing them into the Buada Lagoon and another such body of water at Anabar. Indeed, the fish thus raised have long been considered a high-quality food by the Nauruans for being so rich in fat. Fish farming therefore stood as a social organizer between different tribes: the exploitation was shared by tribes by using low walls, looking after the fish was trusted to men who regularly waded in the waters to keep them oxygenated and filled