in Thailand and Myanmar. In Yunnan's Shangyong Nature Reserve, three individuals were detected during surveys carried out from 2004 to 2009. Behaviour and ecology In Thailand's Huai Kha Khaeng Wildlife Sanctuary, seven female and four male tigers were equipped with GPS radio collars between June 2005 and August 2011. Females had a mean home range of and males of . Between 2013 and 2015, 11 prey species were identified at 150 kill sites. They ranged in weight from . Sambar deer, banteng, gaur and wild boar were most frequently killed, but also remains of Asian elephant calves, hog badger, Old World porcupine, muntjac, serow, pangolin and langur species were identified. Threats The primary threat to the tiger is poaching for the illegal wildlife trade. Tiger bone has been an ingredient in traditional Chinese medicine for more than 1,500 years and is either added to medicinal wine, used in the form of powder, or boiled to a glue-like consistency. More than 40 different formulae containing tiger bone were produced by at least 226 Chinese companies in 1993. Tiger bone glue is a popular medicine among urban Vietnamese consumers. Between 1970 and 1993, South Korea imported of tiger bones from Thailand and from China between 1991 and 1993. Between 2001 and 2010, wildlife markets were surveyed in Myanmar, Thailand and Laos. During 13 surveys, 157 body parts of tigers were found, representing at least 91 individuals. Whole skins were the most commonly traded parts. Bones, paws and penises were offered as aphrodisiacs in places with a large sex industry. Tiger bone wine was offered foremost in shops catering to Chinese customers. Traditional medicine accounted for a large portion of products sold and exported to China, Laos and Vietnam. Between 2000 and 2011, 641 tigers, both live and dead, were seized in 196 incidents in Thailand, Laos, Vietnam, Cambodia and China; 275 tigers were suspected to have leaked into trade from captive facilities. China was the most common destination of the seized tigers. In Myanmar's Hukaung Valley, the Yuzana Corporation alongside local authorities has expropriated more than of land from more than 600 households since 2006. Much of the trees have been logged, and the land has been transformed into plantations. Some of the land taken by the Yazana Corporation had been deemed tiger transit corridors. These are areas of land that were supposed to be left untouched by development in order to