RESEARCH TEAM Bossou was discovered as an important chimpanzee field site by the French Zoologist M. Lamotte in 1942 (Kortlandt, 1986). During his first visit to Bossou in 1960, Kortlandt was the first primatologist to conduct research at this site (Kortland, 1962). However, Kortlandt did not continue to work at Bossou, and this study site was truly established in 1976 by Prof. Sugiyama, formerly based at the Kyoto University Primate Research Institute, Japan (Sugiyama & Koman, 1979; Sugiyama, 1981). Research at Bossou has, since then, focused primarily on population dynamics, tool-use, ontogeny and social transmission of behavior, and feeding ecology. Other research areas include social dynamics, reproductive behavior, and vocalizations of the chimpanzees. Every year, several researchers and graduate students visit Bossou to collect data on the wild chimpanzees. The following researchers and graduate students have been carrying research at Bossou and surrounding areas: Yukimaru Sugiyama, Tetsuro Matsuzawa, Osamu Sakura, Takao Fushimi, Hisato Ohno, Kiyonori Kamazaki, Nobukatu Miwa, Naoto Yokota, Rikako Tonooka, Noriko Inoue-Nakamura, Gen Yamakoshi, Tatyana Humle, Hiroyuki Takemoto, Akiko Uchida, Satoshi Hirata, Masako Myowa-Yamakoshi, Michael A. Huffman, Naruki Morimura, Tomomi Ochiai, Maura Lucia Celli, Dora Biro, Makoto Shimada, Sachiko Hayakawa, Shiho Hujita, Claudia Sousa and Gaku Ohashi. Prof. Matsuzawa, the current director of the Bossou field site, has also in 2001 invited a Japanese zookeeper, Chiemi Kadota, to visit Bossou with the aim of providing her with the opportunity to observe chimpanzees behave in their natural habitat. For further correspondence about the chimpanzee research at Bossou, please contact professor Matsuzawa: matsuzaw@pri.kyoto-u.ac.jp