Another Colorado wolf dies after relocation as federal officials investigate circumstances

Elise Schmelzer, The Denver Post on Jun 2, 2025

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Another of Colorado’s gray wolves has died after state wildlife officials brought it to the state from Canada for the state’s historic reintroduction.

Colorado Parks and Wildlife announced Monday that the agency received a mortality notification from a male wolf’s collar on Saturday. The wolf, labeled wolf 2507, was in northwest Colorado when it died.

CPW did not say how the wolf died. The U.S. Fish and Wildlife Service is investigating the death.

The wolf is the ninth of the 25 wolves released in Colorado — or their descendants — to die or be killed since the voter-mandated reintroduction began in December 2023.

Four others among the 15 wolves captured in Canada and released here in January have died: two were killed in Wyoming, one died in Rocky Mountain National Park and a fourth died May 15 in northwest Colorado. CPW officials also killed a sixth wolf last week after it was connected to several livestock killings. That wolf was a descendant of two of the wolves released in 2023.

Three of the 10 wolves released in December 2023 in the first wave of the reintroduction program have since died, though a pair from that group also produced five pups.

Wildlife officials now are monitoring four potential wolf dens and said Monday that it was “likely there are an unknown number of new pups that were born this year.”

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