Photo credit, KIKUCHI, Kazuhiro, National Institute of Agrobiological Sciences

This breed is thought to have derived from Malay type chicken imported from Thailand in the 16th or 17th century. “Shamo” came from Siam, the old name of Thailand. In 1941 Shamo was designated as natural monument by the Japanese Government.

Shamo, Japanese Game, are divided into several varieties, according to their body size and other morphological characters. The main varieties are O-shamo, Ko-shamo, Yamato-gunkei, Nankin-shamo, Kinpa and Yakido.

Shamo kept in Ibaraki Prefectural Poultry Experiment Station was Chu-shamo (middle sized) and introduced from Tokyo Metropolitan Animal Husbandry Experiment Station. O-shamo (Large sized Shamo)

Photo credit, Ibaraki Prefectural Poultry Experiment Station