The Formosan sika deer, is a subspecies of sika deer endemic to the island of Taiwan. Formosan sika, like most of the terrestrial fauna and flora of Taiwan, arrived on the island during Pleistocene glacial periods when lower sea levels connected Taiwan to the Asian mainland. Sika stand 90–120 cm at the shoulder. Males are larger and bear deciduous antlers. The summer coat is light brownish, with obvious white spots, while in winter their coat is darker and the spots fade. The natural distribution of sika on Taiwan was in the woodlands from sea level up to about 300 m elevation. Sika, like many deer, prefer areas of mixed forest, scrub, and open land. Under natural conditions the low-lying alluvial plain that stretches from present-day Taipei along the west coast almost to the southern tip of the island were prime deer habitat and natural populations would have been quite dense.