Our observation and sensor camera photographs confi rmed that Japanese serows live in Tsuru, Yamanashi Prefecture. Six cases were observed in the Tokaichiba region and four cases at Mt.Ozaki. There is no previous record on the serows observed in these low-mountain areas according to archives of Tsuru city. This indicates that the serows have expanded their habitat to these low-mountain areas as the national tendency shows. The possibility of a rapid increse in the population of Japanese serows

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... s low since they tend to maintain a steady habitat density for their ecological feature. Recently, the interspecifi c relationship between the Japanese serow and sika deer is indicated. It is necessary continue the reseach for analyzing the distribution and abaundanse of Japanese serows in Tsuru.