Adult Bison (1987-present)
Inventory estimates as of Jan. 1 of each year (except 1987).  Estimates taken following Nov. roundup and prior to winter death loss, Spring calving, etc.

 

Year	Number	Comments
2001
2000	214
1999	206
1998	219
1997	191
1996	154
1995	171
1994	175
1993	167
1992	137	Note: Phase 2 opened in May. 1186A
1991	110
1990	70
1989	55
1988	34
1987(OCT)	30	Note: Phase 1 opened in Oct. 1160A