Distribution and biological peculiarities in Armenia: The species occupies western and eastern Mediterranean, western and southern Asia. The species is monotypic. In Armenian the species is distributed in Araks Valley, primarily at the Armash fish ponds, occupying small natural and man –made ponds and marshes formed by groundwater in the saline semidesert zone. The species returns from the wintering ground usually in April. It breeds on the tussocks in drying marshes, well concealed amid low dense grass, or in reeds, having from 10 to 12 eggs in the clutch. The fledglings are observed in July. The food of the species is mainly varies considerably between seasons and sites and additionally with age. Diptera are an important component of the diet, especially before and during the breeding season. Small seeds become increasingly important after the breeding season with faeces of post-breeding birds. Newly hatched chicks are highly dependent on emerging chironomids.