female
male
male, 17 July 2010 SW of Xining, China
female, 31 July 2010 Xining, China
male, 1 July 2011 at Great Wall, China in light foggy condit
female, 23 July 2011 Xining, China
male, 28 June 2013 Great Wall, China
male, 27 June 2014 Great Wall, China
male,15 July 2015 Anshan, China
female, 15 July 2015 Anshan, China
male photo by Ye Li, Xiamen, Fujian, China