Distribution and biological peculiarities in Armenia: The species occupies eastern and southeastern Europe, central Asia. The species is monotypic. In Armenian the species is distributed in Lake Sevan basin and in the Araks Valley from Taronik on the Metsamor River southeast to the Armash fish ponds, occupying on natural and man-made lakes with shorelines of reeds (Phragmites) and sedges (Carex) and floodplains of large rivers. Year-round resident. At Armash fish ponds it breeds in reed thickets, having from 5 to 7 eggs in the clutch. The fledglings are observed in (months). The food of the species is mainly consists predominantly of the roots, seeds and vegetative parts of aquatic plants (e.g. Chara spp., Hippurus spp., Hornworts (Ceratophyllum spp.), pondweeds (Potamogeton spp.), Milfoil (Myriophyllum spp.), and especially Stonewort (Nitellopsis obtusa)), although it will occasionally also take aquatic invertebrates (e.g. molluscs), amphibians and small fish. Population dynamics: According to the last estimation, population of the species makes from 50 to 100 breeding pairs. Population trend during last ten years demonstrates______________. The most probable reasons are supposed to be ___________________________________.
Conservation Measures: At current the breeding populations of the species are protected in ______________. Parts of the breeding and migratory ranges are included in the Emerald Network, protected under Bern Convention. The proposed conservation measures include increase of Emerald Sites for protection of the species.