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The lesser flamingo (Phoeniconaias minor) is a species of flamingo occurring in sub-Saharan Africa and western India. Birds are occasionally reported from further north, but these are generally considered vagrants.
The lesser flamingo is the smallest species of flamingo, though it is a tall and large bird by most standards. The species can weigh from 1.2 to 2.7 kg (2.6 to 6.0 lb).[5] The standing height is around 80 to 90 cm (31 to 35 in). The total length (from beak to tail) and wingspan are in the same range of measurements, from 90 to 105 cm (35 to 41 in). Most of the plumage is pinkish white. The clearest difference between this species and the greater flamingo, the only other Old World species of flamingo, is the much more extensive black on the bill. Size is less helpful to distinguish the two species, unless they occur together, since the sexes of each species also differ in height.
The extinct species Phoeniconaias proeses in the same genus, from the Pliocene of Australia, is thought to have been even smaller.
The lesser flamingo may be the most common species of flamingo, with a population that (at its peak) probably numbered up to two million individual birds. This species feeds primarily on Spirulina, algae which grow only in very alkaline lakes. Presence of flamingo groups near water bodies is an indication of sodic alkaline water which is not suitable for irrigation use. Although blue-green in colour, the algae contain the photosynthetic pigments that give the birds their pink colour. Their deep bill is specially adapted for filtering tiny food items.
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Despite being the most common species of flamingo, it is classified as near threatened due to its declining population and the low number of breeding sites, some of which are threatened by human activities.
The population in the two key East African lakes, Nakuru and Bogoria, have been adversely affected in recent years by suspected heavy metal poisoning, while its primary African breeding area in Lake Natron is currently under threat by a proposed soda ash plant by Tata Chemicals. The only breeding site in South Africa, situated at Kamfers Dam, is threatened by pollution and encroaching development.
