Yellowstone National Park - Wolves of Yellowstone (U.S. National Park Service)

A wolf lies in the snow, its watchful eyes staring at the camera

Wolf Restoration

2007 Data
At the end of 2007, at least 171 wolves in 11 packs and various groups occupied Yellowstone National Park (YNP). There were fewer packs than in 2006, but the remaining packs were larger and there were more non-pack wolves (e.g., loners, temporary pairs, etc.). This represents a 26% increase from 2006 and closely matches the population peak of 174 in 2003. Ten packs counted toward the breeding pair objective for the Yellowstone Recovery Area; the Hayden Valley pack lost both breeders late in the year and did not count. One new pack, the Gardner’s Hole pack, formed but did not survive until the end of 2007 (despite producing pups). This was the first year since reintroduction that no new packs formed. One radio collared wolf from Idaho dispersed into the park in late 2007. For more information read the Yellowstone Wolf Project - Annual Report, 2007 (1.7 MB pdf).

Color coded map of 2007 Yellowstone Wolf Territories

2007 Yellowstone National Park Wolf Map Territories

Yellowstone National Park 2008 Official Wolf Population Count

Pack	Adults	End-Of-Year Pup Count	Total
Northern Range
Quadrant Mountain (469F)	4	0	4
*Everts	5	3	8
527F Group	3	0	3
471F Group	3	0	3
Blacktail Deer Plateau	8	0	8
Agate	4	0	4
Slough	7	0	7
*Druid	8	5	13
Loners/Non-Pack Wolves	6	0	6
Northern Range Totals	48	8	56
Non-Northern Range
*Mollie's	10	3	13
*Yellowstone Delta	7	2	9
Yellowstone Delta Subgroup	4	0	4
*Bechler	6	3	9
Cougar Creek	4	0	4
*Gibbon Meadows	19	6	25
Canyon	4	0	4
Non-Northern Range Totals	54	14	68
Totals	102	22	124

*6 breeding pairs

The United States Fish and Wildlife Service provides weekly updates on the wolves of the Rocky Mountain region including wolves of Yellowstone.

2006 & Earlier Data: Yellowstone Wolf Project Annual Reports
2006 (1.63 MB pdf)	2000 (248K pdf)
2005 (1.7 MB pdf)	1999 (693K pdf)
2004 (1 MB pdf)	1998 (320K pdf)
2003 (903K pdf)	1997 (643K pdf )
2002 (980K pdf)	1995-1996 (1.1 MB pdf)
2001 (541K pdf)

2004 Map
Greater Yellowstone Ecosystem wolf pack territory map

The Yellowstone Park Foundation raises money each year to help support Yellowstone's Wolf Project. They are a non-profit organization whose mission is to fund projects and programs that protect, preserve and enhance Yellowstone National Park.