English: White-headed Duck, White-headed Stifftail
Russian: Савка
German: Weisskopf-Ruderente
French: Erismature a tete blanche
Mongolian: Цагаантолгойт ямаансүүлт, Ямаансүүлт
Japanese:  カオジロオタテガモ (Kaojiro-otategamo)

Status: Very rare species. According to the IUCN Red list categories and criteria, the species evaluated as-Critically Endangered.

Habitat: Dense feed thickets, shores and beds of deep rivers; lake islands.

Distribution and range in Mongolia: Uvs, and Khyrgas Lakes in the Great Lakes Depression, Zereg and Airag Lakes in Khovd Aimag.

Population and Threats: Rare everywhere. Around 15,000 individuals estimated to exist worldwide. Several hundred have been recorded in Mongolia. At the end of the summer of 1981, 15-18 were seen where the Tes River flows into Uvs Lake, 8 were seen in the reeds of Khyrgas Lake. Recently with the range edge moving eastwards, the Olon Lake of Teshig Soum in Bulgan Aimag is being used for breeding ground. Threats also include: reduction in water levels, loss of vegetative cover, reeds damaged by rats, mice, livestock grazing, fire and illegal hunting.

Conservation Measures: Included as very rare animal in the Mongolian Law on Fauna, Convention on International Trade on Endangered Species (CITES), the Mongolian Red Book (1987, 1997). Reproduction area is included within the NSPAN.

Further actions: Study on distribution, population abundance, reproductive biology and ecology; remove from the breeding sites the winter and spring camp sheds for livestock; prohibit reed cutting on lakes with reeds, prevent fires and protect from fires, and raise awareness.