1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, and 1996. International Livestock Research Institute. This polygon shapefile portrays number of wildebeest observed in 1977-78 and 1994-96 in the Athi-Kapiti Plains, Kenya. Note: This data shows number... International Livestock Research Institute.