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

APPENDIX VI:
KNOWN BISON MOVEMENTS TO AND BEYOND YELLOWSTONE NATIONAL PARK BOUNDARIES 1942-67

West Boundary South Boundary North Boundary East Boundary

Pop. No.
Mary Mtn.		 No. out; location Pop. No.
Mary Mtn.		 No. out; location Pop. No.
Lamar		 No. out; location Pop. No.
L'mr-P'ln.		 No. out; location
1942 Dec.



742A few; Gardiner

1942-43 late winter



742130; down Yell R., most only about 10 days and returned

1943 Aug.
Sept.

1001; 1-1/2 mi. S of S. Gate
3; vicinity S. Gate		 800 est.150; near Lake Abundance

1947 fall



50031; Elk Cr.-Hellroaring area

1948 late winter



31368; Gardiner-Jardiner

1951 late Feb.
March		 6401; Young Ranch
1; Gallatin highway
380 est.
6; near line, inside

1955 Feb. 900 est.3; Fall River Bridge



1956 Mar.





220 est.8; Gardiner-Jardine
1957 Feb. 550 est.6; Fall River Bridge



1959 Feb. 400 est.1; Bitch Cr.



1962 winter



135 est.10; Eagle Cr.

1963 winter 500 est.34; Bechler Mdws. (in)



1964 late winter
summer
fall		 400 est.1; Fall River Ridge

1; Fall River Ridge		400 est.2; 7 mi. S. of boundary
200 est.
1; Mol Heron Cr.

1965 Jan. 400 est.23; Bechler Mdws. (in)



1966 Mar.
May
July
Aug.		 400 est.2; Fall River Ridge
2-3;Cave Falls area
1; Grassy Lake
2;West Entr. to Henry's Lake to Ennis


200 est.


1; S. Gate



150 est.

Some (bulls)
Upper Timber Cr.
1967 late winter
fall		 200 est.2 female calved, 1 male Porcupine-Warm River cow+calf Porcupine



Often-summer






A few
Every year-summer




A few; Upper Hellroaring and Slough drainages

NOTE: Refuge Manager Vivion, Red Rock Lakes National Wildlife Refuge, states (1968 pers. comm.) there area few wild bison in that area from ranched herds of some years ago. Occasional west side reports may not actually be Yellowstone bison.

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Last Updated: 24-Jan-2005