Using the roost count method, we surveyed the Black-necked Cranes (Grus nigricollis) and large waterbirds on 17th and 18th January 2013 at the Shuduhu wetland in Shangri-la County, Yunnan Province. During the two days, we did not record any Black-necked Cranes, Eurasian Cranes (Grus grus), Bar-headed Geese (Anser indicus), Ruddy Shelducks (Todorna ferruginea), Black Storks (Ciconia nigra)and some other large waterbirds; 23 Black-necked Cranes, however, were found foraging in the wetland on 9 March 2013.
Li FS, Yang XJ, Yang F. 2005. Status and Conservation of Black-necked Cranes on the Yunnan and Guizhou Plateau, People's Republic of China. Kunming: Yunnan Nationalities Publishing House, 1-186. [李凤山,杨晓君,杨芳. 2005. 云贵高原黑颈鹤的现状和保护. 昆明:云南民族出版社,1-186.]