Wyoming Ecological Services
Mountain-Prairie Region

Federally Listed, Proposed & Candidate Species | Species of Concern | Migratory Birds | All Species By County



Federally Listed, Proposed and Candidate Species


North American Wolverine
(Gulo gulo luscus)

Staus: Proposed

WolverinePhoto Credit: NPS


Wolverine Section 7 Range

Section 7 Range Symbol

Wyoming Section 7 Range
North American Wolverine

Potential Distribution in Wyoming

For Species Lists, please use the IPaC System

Section 7 Range

Under Section 7 of the Endangered Species Act of 1973, Federal agencies, or project proponents whose actions have a Federal nexus (e.g., Federal funding, permit, or lease), must consult with the U. S. Fish and Wildlife Service if their actions “may affect” listed species (endangered, threatened, proposed, candidate) or their habitat.  Section 7 species ranges identify those areas on the landscape where agencies or proponents should consider potential effects, both direct and indirect, to the species and their habitat.  These Section 7 species ranges typically encompass larger areas than specific locations where listed species are known to occur.  Project proponents are encouraged to refer to the Service’s Information, Planning, and Conservation System (IPAC) website at http://ecos.fws.gov/ipac/ or to contact the FWS Wyoming Ecological Services Office for additional information http://www.fws.gov/wyominges/ :307-772-2374.  (Section 7 Range boundaries based on the best available data at time of development.  Section 7 Ranges will be updated as new information becomes available.)

Download Section 7 Range GIS Data or Section 7 Range Google Earth layers


Species Information

The North American wolverine (Gulo gulo luscus) in the contiguous United States was determined to be a distinct population segment (DPS).  This DPS is a candidate for listing under the ESA (75 FR 78030; December 14, 2010).  The North American wolverine (Gulo gulo luscus) is a member of the Mustelidae (weasel) family and resembles a small bear with a bushy tail.  It has a broad, rounded head; short, rounded ears; and small eyes.  Each foot has five toes with curved, semi-retractile claws used for digging and climbing.  Female wolverines use birthing dens that are excavated in snow.  Persistent, stable snow greater than 5 feet deep appears to be a requirement for natal denning as it provides security for offspring and buffers cold winter temperatures.  Wolverines occur within a wide variety of alpine, boreal, and arctic habitats, including boreal forests, tundra, and western mountains.  Wolverines are opportunistic feeders and consume a variety of foods depending on availability.  They primarily scavenge carrion, but also consume small animals and birds, fruits, berries, and insects.  Potential threats to the wolverine include climate change, dispersed recreation, transportation corridors, and land management activities.

Last updated: March 21, 2014