Formosan sika deer period with a switch to Japan as the major export market. The intensive hunting of sika during the Dutch era must have severely decreased the population of sika. Sika populations continued to decline over the next few centuries as the human population expanded—the natural habitat of sika in the lowland plains was steadily converted to farmland, and later urbanized, as the human population increased. Hunting also continued. As a result, wild sika populations decreased steadily, and in 1969 the last known wild sika was killed. However, deer are easily kept in captivity and there were a number of captive populations
Sika AG Sika AG Sika AG is a specialty chemical company for building and motor vehicle supplies, headquartered in Baar, Switzerland. It has a leading market position in both the building sector and the automotive industry. Business activities focus on the seven target markets. Sika was founded in 1910 when Kaspar Winkler laid the cornerstone for the firm. Winkler worked himself up from poverty to become a successful entrepreneur, and by the 1920s he was already engaged in founding subsidiaries abroad. Today the company has more than 17,000 employees, subsidiaries in 98 countries, and an annual sales turnover of CHF 5.75 billion