Tibetan Wagtail_16-06-11_Motacilla citreola
The citrine wagtail is a small songbird in the family Motacillidae. The term citrine refers to its yellowish colouration. Its systematics, phylogeny and taxonomy are subject of considerable debate in the early 21st century. Wikipedia
This is subspecies M. c. calcarata that breeds in E Iran, Afghanistan, and C Asian mountains from Tien Shan E to C China (E to C Gansu and Sichuan) and S to N Himalayas; winters lowlands from S Afghanistan E to Myanmar. source HBW.
China, Sichuan, Tibetan plateau. Altitude 3,802m.