First Wolf Pups Born in Colorado in Over 80 Years
Colorado Parks and Wildlife confirmed in summer 2024 that gray wolves released onto the Western Slope the previous December had produced pups — the first wolves born in Colorado since the species was systematically eliminated from the state in the 1940s through trapping, shooting, and federally sponsored poisoning campaigns.
The confirmation arrived roughly seven months after CPW released ten wolves captured in Oregon onto public land on Colorado’s Western Slope in December 2023. Those releases fulfilled the mandate of Proposition 114, which Colorado voters approved in November 2020 by a margin of less than one percentage point — the first time in American history that a wildlife reintroduction was ordered directly by ballot measure rather than by an agency decision.
From Release to Reproduction
The December 2023 releases placed wolves in Grand and Summit counties, in terrain that supports large elk and deer herds across vast tracts of public land. Each animal was fitted with a GPS collar, and CPW has tracked their movements continuously since.
The wolves dispersed quickly and widely. Individual animals were documented crossing into Moffat, Jackson, and Routt counties within months of release, and at least one animal ranged into Wyoming — behavior consistent with the enormous territories wolves establish and the long exploratory movements young animals make before settling.
Reproduction is the threshold that separates a release program from a population. Adults that survive a year are a promising sign; pups born on the landscape mean the animals are pairing, denning, and provisioning young in Colorado habitat. CPW’s stated recovery objective is a self-sustaining population of roughly 50 wolves, and reaching it depends on successful reproduction repeating across multiple years and generations — not on the survival of the founding animals alone.
Managed by the State, Not the Federal Government
Colorado’s wolves occupy an unusual legal position. The Northern Rocky Mountain gray wolf population was removed from the federal endangered species list in 2011, and Colorado’s reintroduced animals are managed primarily under state authority rather than the full protections of the Endangered Species Act. That places the consequential decisions — how conflicts are handled, when intervention is warranted, what compensation is owed — with CPW and the Colorado Parks and Wildlife Commission.
That authority comes with obligations. CPW administers a livestock depredation compensation program for ranchers who lose animals to wolves, alongside conflict-minimization assistance such as range riders and carcass management. How well those programs work will shape the political durability of the restoration as much as the biology will.
Read the full species profile: Gray Wolf