Proposition 114 - now state statute 33-2-105.8 - calls for the reintroduction of gray wolves on designated lands west of the Continental Divide.
Statute directs the Colorado Parks and Wildlife Commission to:
Develop a plan to reintroduce and manage gray wolves in Colorado no later than December 31, 2023, on designated lands west of the Continental Divide;
Hold statewide hearings about scientific, economic, and social considerations;
Periodically obtain public input to update the plan; and
Use state funds to assist livestock owners in preventing conflicts with gray wolves and pay fair compensation for livestock losses.
The Parks and Wildlife Commission passed the Final Colorado Wolf Restoration and Management Plan on May 3, 2023. Now CPW will work to meet the deadlines directed by statute, with reintroduction requiring a close partnership with the U.S. Fish and Wildlife Service.
Our Wolves in Colorado FAQ page provides the most current information available for frequent questions on the species and planning status.
Wolves in Colorado: Who has Authority?
In February 2022, after State Statute 33-2-105.8 became law, the USFWS vacated a prior rule delisting gray wolves. This returned the management authority of the species to the USFWS.
CPW has been in communication with USFWS regarding wolf management from the outset of this restoration and management planning effort. In fact, USFWS was represented on the Technical Working Group that was assembled by CPW in planning efforts for reintroducing the species.
CPW has finalized its wolf restoration and management plan and the USFWS is concurrently managing a 10(j) process that will provide management flexibility of the species in Colorado.
How will CPW manage wolf populations? Is there a wolf population objective?
Wolves will be managed within Colorado using a phased approach based on the minimum number of animals known to be present in the state. These phases will correspond with the status of the species on the Colorado Threatened and Endangered Species list. There is no wolf population objective in the final management and restoration plan.
Currently, wolves are State Endangered. Wolves will be downlisted from State Endangered (Phase 1) to State Threatened (Phase 2) when CPW biologists document a minimum wintertime count of 50 wolves anywhere in the state for four successive years. Wolves will be delisted from the State Threatened and Endangered species list and classified as delisted, nongame (Phase 3) when a minimum count of at least 150 wolves anywhere in Colorado is observed for 2 successive years, or a minimum count of at least 200 wolves anywhere in Colorado is observed, with no temporal requirement.
The U.S. Fish and Wildlife Service is analyzing the alternatives related to designating the wolf population in Colorado as “Experimental” which would relax the take prohibitions. As a federally listed species, there is a strict prohibition against regulated hunting and other forms of take.
Where would migrating or newly introduced wolves come from?
Wolves that migrate in and out of Colorado would likely come from the Northern Rockies populations currently in the states of Montana, Idaho and Wyoming.
The restoration plan proposes the most desirable donor source locations as Idaho, Montana and/or Wyoming, though final transfer agreements have not yet been concluded. In the event that none of these three states can serve as source sites for wolf donor populations, CPW will explore agreements with the states of Washington and/or Oregon.
Donor agreements will be finalized with partnering state and federal agencies.
Will CPW be tracking wolves in Colorado?
CPW will implement a thorough post-release monitoring program to assess and modify reintroduction protocols, if necessary, to ensure the highest probability of survival and site retention for released animals. All released wolves will be monitored using satellite GPS collars, which will inform managers on survival and dispersal, as well as future release protocols. As packs establish, effort will be made to collar at least one member of each pack with emphasis on breeding adults. The desired standard will be to have two collars in each pack; whether this is achievable for every pack in the state will be determined following reintroduction.
Will reintroduced wolves migrate to other areas of the state?
Yes. As wolf population numbers grow, some wolves will migrate to establish new territories. Wolves are habitat generalists, meaning they do not have specific habitat requirements that determine where they can live. As long as prey is available, wolves can use a variety of areas. It is anticipated that wolves will expand widely over time, including to the Front Range of Colorado.
Wolf Sighting and Confirmations
There are known wolves already in the state.
Over the past decade, we have confirmed or have had probable wolf dispersals that occurred in 2004, 2006, 2009, and 2015.
Colorado is part of the gray wolf’s native range, but wolves were eradicated by the 1940s. Over the past decade, the U.S. Fish and Wildlife Service (USFWS) restored gray wolves in Wyoming, Idaho, Montana, New Mexico and Arizona. Individual wolves, including two wolves that have since mated and produced pups in Jackson County, have been periodically migrating into Colorado. Wolves from the south may do so someday as well.
In the summer of 2019, a wolf from the Snake River Pack (a pack in Wyoming) was located in Jackson County, Colorado.
We received a report in January 2020 of six large canids that were seen near the Wyoming and Utah borders. CPW staff were able to locate and visually confirm the presence of the pack. Staff later received additional sighting reports and photos of wolves in this area.
A male wolf's presence was confirmed in late January 2021 when it was seen with the wolf from the Snake River pack. In June 2021, staff observed pups with this pair, becoming the first documented breeding pair in the state in several decades.
CPW typically fields around 100 sightings each year. When confirmed sightings occur, the number of additional reports spike. However, wolf reports are typically not considered reliable without strong supporting evidence.
Think you’ve seen a wolf in Colorado?
Contact your local CPW office and talk to a district wildlife manager.
Wolf Management Resources
Colorado Wolf Management Resources
Wolf Resource Guide: Hands-on Resource to Reduce Depredations
2020 CPW Question and Answer
Colorado State University Wolf Information
2016 CPW Commission Wolf Resolution
Historical Colorado Wolf Management
Status of Colorado's Deer, Elk and Moose Populations
Other State and Federal Wolf Management Resources
Alaska Game and Fish
California Department of Fish and Wildlife
Department of the Interior, U.S. Fish and Wildlife Services
Idaho Game and Fish
Michigan Department of Natural Resources
Minnesota Department of Natural Resources
Montana Game, Fish & Parks
National Park Service
Oregon Department of Fish and Wildlife
Washington Department of Fish and Wildlife
Wisconsin Department of Natural Resources
Wyoming Game and Fish
Disease Management Resources
Idaho Fish and Game
Michigan Department of Natural Resources
Montana Fish Wildlife and Parks
Oregon Department of Fish and Wildlife
Wyoming Game and Fish
Chronic Wasting Disease
- Nichols, T. A., Fischer, J. W., Spraker, T. R., Kong, Q., & VerCauteren, K. C. (2015). CWD prions remain infectious after passage through the digestive system of coyotes (Canis latrans). Prion, 9(5), 367-375.
https://www.tandfonline.com/doi/full/10.1080/19336896.2015.1086061
Other Resources
-
Alston, J. M., et al. (2019). Reciprocity in restoration ecology: When might large carnivore reintroduction restore ecosystems? Biological Conservation, 234, 82-89.
https://doi.org/10.1016/j.biocon.2019.03.021
-
Bangs, E.E., S.H. Fritts, J.A. Fontaine, D.W. Smith, K.M. Murphy, C.M. Mack, and C.C. Niemeyer. 1998. Status of gray wolf restoration in Montana, Idaho, and Wyoming. Wildlife Society bulletin 26(4):785-798.
-
Cariappa, C.A., J.K. Oakleaf, W.B. Ballard, and S.W. Breck. 2011. A reappraisal of the evidence for regulation of wolf populations. J. Wildl. Mgmt. 75:726-730.
-
Hedrick, P., Wayne, R., and Fredrickson, R. (2018) Genetic rescue, not genetic swamping, is important for Mexican wolves. Biological Conservation, 224, 366-367.
https://doi.org/10.1016/j.biocon.2018.05.006
-
Mech, L. D. (2012). Is science in danger of sanctifying the wolf?. Biological Conservation, 150(1), 143-149.
https://doi.org/10.1016/j.biocon.2012.03.003
-
Mech, L. D. and S. M. Barber-Meyer. 2015. Yellowstone Wolf (Canis lupus) Density Predicted by Elk (Cervus elaphus) Biomass. Can. J. Zoology. 93(6): 499-502, 10.1139/cjz-2015-0002.
-
Mech, L. D. (2017). Where can wolves live and how can we live with them?. Biological Conservation, 210(Part A), 310-317.
https://doi.org/10.1016/j.biocon.2017.04.029
-
Odell, Eric A., et al. (2018). Reply to Hedrick et al.: The role of genetic rescue in Mexican wolf recovery. Biological Conservation, 224, 368-369.
https://doi.org/10.1016/j.biocon.2018.05.010
-
Eric A. Odell, James R. Heffelfingerb, Steven S. Rosenstockb, Chad J. Bishopc, Stewart Lileyd, Alejandro González-Bernale, Julián A. Velascof,g, Enrique Martínez-Meyere (2018). Perils of recovering the Mexican wolf outside of its historical range. Biological Conservation 220(2018) 290-298. Odell_Perils_of_recovering_the_Mexican_wolf_outside_of_its_historical_range_OA.pdf
-
Pimlott, D.H. 1967. Wolf predation and ungulate populations Am. Zool. 7:267-278.
-
Rutledge, L.Y., B.R. Patterson, K.J. Mills, K.M. Loveless, D.L. Murray, and B.N. White. 2010. Protection from harvesting restores natural social structure of eastern wolf packs. Biol Conserv 143:332-339.
-
Wolff, J.O. 1997. Population regulation in mammals; An evolutionary perspective. J. Anim. Ecology 66: 1-13.