Foraging frequency and vigilance behaviour of Himalayan Snowcock (Tetraogallus himalayensis) pairs were observed by focal sampling method in Dongdashan and Yanchiwan Nature Reserve from April to July,2004 and 2005. The foraging frequency of the females was significantly higher (P<0.05) than that males,while the vigilance was obviously lower (P<0.05) than that of the males in pre-incubation and incubation period.And there were no significant difference between individuals within the same sex (P>0.05).The males did not share any duty in incubation and chick brooding,but they were responsible for the protection of the females in the duration of laying egg and incubating.The paper also described the vigilance behaviors made by the wild Snowcock in this study