The Bison of Yellowstone National Park (Appendix 4)

YELLOWSTONE

The Bison of Yellowstone National Park
NPS Scientific Monograph No. 1

APPENDIX IV:
BISON POPULATION 1902-68

	Lamar			Pelican			Mary Mountain			Total
Winter	Actual Ct.	Loss	Est.	Actual Ct.	Loss	Est.	Actual Ct.	Loss	Est.	Actual Ct.	Loss	Est.

1901-02	21			23		25				44		46
03	28	1		19						47	1
04	39	2		12	5					51	7
05	44			30		30
06	57
07	59	2		15		15	10		10	84	2
08	73	1		20			2			95	1
09	95	5		23						118	5
10	120	3		29						149	3
11	141	2		27						168	2
12	143	28		48			1			192	28
13	162	8		53						215	8
14	193	5
15	239	4		31						270	4
16	276	18		72						348	18
17	330	8		67	3					397	11
18	385	5
19	414	45		90	1					504	46
20	440	17		61						501	17
21	526	7		76						602	7
22	578	56		69						647	56
23	672	14		76						748	14
24	753	13
25	764	109		66						830	109
26	866	23		65						931	23
27	936	41		72						1008	41
28	996	54		61						1057	41
29	1092	106		17						1109	106
30	1097	132		27						1124	132
31	1182	120		10						1192	120
32	1016	222
33	985	207	1000
34	950	177
35	830	264	1000
36	640	109	708	136		150	71			847	109	929
37	456	17	488	188		200	30		68	674	17	756
38	554	25	577	146		160	55		63	755	25	800
39	582	67	605	157		165	72		80	811	67	850
40	630	3	675	122		165	116		130	868	3	970
41	536	212	560	217	1	230	56		137	809	213	927
42	513	200		256	2		100			869	202
43	742	9		122	2		100			964	11
44	352	405		222	1		173	1		747	407
45	445			324			163			932
46	348	200		233			210	38		791	238
47	442	7					101^a
48	313A	237		307			340			960	237
49	396			205			525A			1126
50	230	228		311A			553A			1094	228
51							640A
52	143	243		251	5		582	2		976	250
53
54	158^b	77	106	461			858	62		1477	139	1425
55									288		288	1350
56	207	24		392	118		659	231		1258	373
57	145	60		88			310	212		543	273
58								12			12
59		18						26			44	800
60												800
61	212			169			488			869
62		148	135			190			650		148	975
63		8	163			238			418		370	819
64		6	187			274			400		6	821
65	85	87		115	38		188	267		388	392^c
66	66	2		100	1		76	51	200	226	54	366
67	80	1	82	123	1	124	194	1	194	397	3	400
68	70	1	80	160	2		188	1	200	418	4	440
^aFirehole only. ^bCount made during reduction. ^cIncludes 38 natural mortality. Actual counts exclude loss figures. Counts are postreduction, precalf. Losses are mostly reductions. Counts before 1951-52 are ground unless marked with A. Beginning in 1951-52, all counts are aerial. Changes have been made from previous tabulations (Skinner and Alcorn, 1942-51) according to more accurate information.

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Last Updated: 24-Jan-2005