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Yellowstone Wolf: Project Citizen Science

Yellowstone's wolf packs—Mollie's Pack

The Mollie’s pack was originally called the Crystal Creek pack and included some of the original translocated wolves from the Yellowstone reintroduction effort in 1995. As the Crystal Creek pack, they were displaced from their territory in 1996 by the Druid Peak pack and relocated to Pelican Valley, in the park’s interior. Limited ungulates remain in the interior during the winter so this pack learned to specialize on hunting bison. Wolf kills provide carcasses that are utilized by a variety of scavengers, including grizzly bears. Unique behavior, including hunting bison and regular interactions with bears, prompted the long-term Pelican Valley study where wolf, bison, and bear interactions are documented. In 2000, none of the original pack members remained and the pack consistently inhabited Pelican Valley. This prompted the renaming of the pack in honor of the late Mollie Beattie, Director of the US Fish and Wildlife Service during the wolf reintroduction. Having been a pack for over 15 years, there has been significant turn-over in the pack composition, pack size, and alpha individuals. Most recently the pack has been composed of the alpha pair (980F and 779F) and their offspring from 2013 and 2014. The Mollie’s Pack spends the majority of its time in the Pelican Valley area, however, this winter, as in past winters, the pack spent time on the Northern Range. [Updated: 4/2015]



Pack composition

ID Social status Age class Color Sex Age Mange status Birth year Birth pack Description
779FAlphaAdultBlackFemale6Uninfected2010Mollie's Pack
978FSubordinateAdultGrayFemale3Uninfected2013Mollie's Pack
979FSubordinateAdultBlackFemale2Uninfected2014Mollie's Pack
1013MSubordinateAdultGrayMale12015Mollie's Pack
1014MSubordinateAdultBlackMale3Uninfected2013Mollie's Pack
1015MSubordinateAdultBlackMale2Uninfected2014Mollie's Pack
No ID yetSubordinateAdultBlackUnknown3Uninfected2013Mollie's Pack
No ID yetSubordinateAdultBlackUnknown3Uninfected2013Mollie's Pack
No ID yetSubordinateAdultBlackUnknown2Uninfected2014Mollie's Pack
No ID yetSubordinateAdultBlackUnknown2Uninfected2014Mollie's Pack
No ID yetSubordinateAdultGrayUnknown2Uninfected2014Mollie's Pack
No ID yetSubordinateAdultBlackUnknown12015Mollie's Pack
No ID yetSubordinateAdultBlackUnknown12015Mollie's Pack
No ID yetSubordinateAdultBlackUnknown12015Mollie's Pack
No ID yetSubordinateAdultGrayUnknown12015Mollie's Pack
No ID yetSubordinateAdultGrayUnknown12015Mollie's Pack


35 photos for this pack