There is no obvious relation between food supply and this breeding date. Lesser Flamingos do not breed annually, and tend to start in the last quarter, October to December, of any year in which they breed. The advantage of the site lies in its complete freedom from predatory mammals.ĭetails of known breeding, obtained by aerial surveys, are given. Breeding conditions are extremely harsh, mid-day temperatures regularly exceeding 50 oC and reaching 70–75 oC. Breeding has been sporadically reported from other lakes, but reports are usually inadequate and in many cases successful breeding was not proven.Īt Lake Natron the breeding site is in the middle of the lake which is 70 km long by 24 km wide. Lake Magadi, used in 1962 when Lake Natron was full of water, may only have been used once this century. The only known regular breeding site is on soda mudflats at Lake Natron, Tanzania. Unless the developers abandon their plans for Lake Natron, the species could soon become globally threatened through the loss of its most important breeding site.This paper summarizes what has been learned about the breeding behaviour of the Lesser Flamingo Phoeniconaias minor from 1954 to 1969, especially at Lake Magadi, Kenya, in 1962. Protests from local people and conservation organisations have resulted in the development being postponed for now, but Lesser Flamingos are not safe yet. ![]() The tourist industry at Lake Natron would also suffer if Lesser Flamingos-one of the chief attractions-were forced to leave, and concerns have been raised over the consequent loss of local livelihoods (Burton et al. ![]() New scavenging predators, such as Marabou Stork Leptoptilos crumeniferus, could be attracted to the area and an increase in the human population twinned with improvements to the surrounding infrastructure could result in an increase in illegal poaching from nesting colonies (Koenig 2006, Burton et al. Lesser Flamingos would be threatened by disturbance from heavy machinery, vehicles, construction activities and aircraft noise associated with the facility. The development would also compete for critical freshwater resources needed by the flamingos for bathing and drinking, and could cause other mudflats and wetlands surrounding Lake Natron to dry out and cease to act as predator deterrents. Flamingos prefer mud sites for nesting, but soda ash extraction would deepen the lake and flood these sites, making them unusable. Freshwater sources and the lake water itself would also become heavily polluted with domestic and industrial waste, sewage and toxic chemical seepage from storage areas. These effluents could significantly lower the salinity of the lake and increase its turbidity, lowering the productivity of cyanobacteria such that the lake would support fewer flamingos. 2007).Ĭovering a wide area and including new road, rail and air links, a coal-fired power station and modern housing, the facility is predicted to extract more than 100,000 litres of freshwater and 550,000 litres of brine from the lake every hour and to pump back over 400 metric tons of depleted brine and 90 metric tons of mud. ![]() In 2007, plans were unveiled to build a soda (sodium carbonate) extraction facility on the shores of the lake, a proposition that would significantly change its hydrology and chemical composition rendering it unsuitable for Lesser Flamingo (Fishpool and Evans 2001, Burton et al. Indeed it is the only known site in East Africa where the species regularly nests, with 2.5 million individuals (75 % of the global population) flocking to the area every year (Koenig 2006, BirdLife International 2008). With vast isolated salt flats providing safety from predators and ready supplies of freshwater and food from lakeside springs and cyanobacteria-rich hot saline waters, Lake Natron is a perfect breeding site for Lesser Flamingo Phoeniconaias minor, classified as Near Threatened on the 2008 IUCN Red List. It is internationally recognised as a valuable wetland site by the Ramsar Convention and as an Important Bird Area (IBA) by BirdLife International (Fishpool and Evans 2001, TME 2007). Lake Natron in Tanzania is an important wildlife area that supports a thriving Masai community and large mammal and bird populations.
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