There have been less than 10 records of Long-tailed Duck Clangula hyemalis in Mongolia. A very poor photo (just to proof) of a bird at Dalai Nuur (near Khar Us Nuur) in Khovd province, taken by A. Bräunlich in June 2007 was the only photo of this species published on Birding Mongolia so far.
During a birdwatching trip, organized by Hugues Dufourny in collaboration with the Mongolian Ornithological Society through Mongolia in May/June 2010 three Long-tailed Ducks were seen at Tsegeen Nuur (Nuur=lake) between Ulaanbaatar and Dashinchilen on 28 May 2010.
Long-tailed Duck, Tsegeen Nuur, May 2010.
Photo P.-M. Fontaine
Thanks to Hugues and Pierre-Mary for sharing this observation and the photo. More news from this trip will follow soon.