Winter and spring diet composition of feral yak in Helan Mountains, China
贺兰山野化牦牛冬春季食性

Feral yak were introduced into the Helan Mountains on the border between Ningxia Hui and Inner Mongolia Autonomous Regions,China,by the Buddhist monks of Tibet about two hundred years ago.The feral yak population was estimated to be around 200 individuals at present.The plant species composition of the diet of feral yak was studied in order to better understand seasonal variation from November to December 2008 and from April to May 2009.We collected 5-10 g fecal pellets of feral yak from each dung piles in ...