About Phoeniconaias minor (É.Geoffroy Saint-Hilaire, 1798)
The lesser flamingo (scientific name Phoeniconaias minor) is the smallest flamingo species, though it counts as a tall and large bird by most general standards. Adult individuals weigh between 1.2 and 2.7 kg (2.6 to 6.0 lb), have a standing height of around 80 to 90 cm (31 to 35 in), and measure 90 to 105 cm (35 to 41 in) in both total length from beak to tail and wingspan. Most of its plumage is pinkish white. The clearest distinction between the lesser flamingo and the greater flamingo, the only other flamingo species native to the Old World, is the much more extensive black marking on the lesser flamingo's bill. Size is a less reliable characteristic for telling the two species apart, unless they are found in the same location, because males and females of each species also differ in height. The extinct species Phoeniconaias proeses, which belongs to the same genus and is known from Pliocene deposits in Australia, is thought to have been even smaller than the lesser flamingo. The lesser flamingo may be the most common flamingo species, with a peak population that probably reaches up to two million individual birds. This species feeds primarily on Spirulina, a type of algae that only grows in very alkaline lakes. The presence of lesser flamingo groups near bodies of water indicates the water is sodic alkaline, which is unsuitable for irrigation. Although Spirulina is blue-green in color, the algae contains photosynthetic pigments that give the birds their characteristic pink color. The lesser flamingo's deep bill is specially adapted to filter tiny food items. Other types of algae consumed by the species include Synechocystis minuscula, Synechococcus pevalekii, Synechococcus elongatus, Monoraphidium minutum, Oscillatoria sp. and Lyngbya sp. To a lesser extent, the species also feeds on small invertebrates, including copepods (Paradiaptomus africanus), rotifers (Brachionus), diatoms (Navicula), and microscopic alkaliphilic cyanobacteria (Arthrospira fusiformis, A. maxima).
