Northern Colorado Ranchers Report Deadly Weekend for Livestock Attacked by Wolves
- Northern Colorado ranchers reported deadly wolf attacks killing two calves and injuring others during the weekend of May 16–18 across three ranches including Crystal River, McCabe, and Lost Marbles.
- These incidents occurred amid Colorado's recent gray wolf reintroduction effort, which began in December 2023 and involved releasing 15 wolves from British Columbia under the state's Wolf Restoration Plan.
- Colorado Parks and Wildlife is actively investigating several recent incidents of wolf attacks on livestock in areas near Carbondale, with local ranchers attributing most of the damage to the Copper Creek pack. Earlier this year, the agency confirmed multiple confirmed wolf depredations across the region.
- Ranchers described emotional strain and expressed concerns, with Ginny Harrington stating, "This is not sustainable" and describing the heartbreak of finding calves torn apart, while CPW deployed 11 range riders trained in hazing to help mitigate conflicts.
- These events highlight ongoing challenges balancing wolf restoration with livestock protection, prompting increased conflict mitigation efforts and investigations that CPW says will provide further information when complete.
19 Articles
19 Articles
Reported wolf attack may have involved pups born in Colorado, but verdict still out
A report of wolves killing livestock in Colorado's Pitkin County over Memorial Day weekend has been getting quite a bit of attention in recent days. That said, some details remain

Colorado wolves extend territory toward state’s southern border
Colorado wolves’ territory now nears three of the state’s four borders as the apex predators continue to expand their territory across the Western Slope, a new map released by state wildlife officials shows. At least one of Colorado’s collared wolves for the first time pushed into southwest Colorado, including in watersheds northeast of Durango that include parts of San Juan, La Plata and Archuleta counties. The wolves’ territory now spreads fro…
Northern Colorado ranchers report deadly weekend for livestock attacked by wolves
PITKIN COUNTY, Colo. (KRDO) -- The Colorado Cattlemen's Association says two calves are dead and others are injured after wolf attacks last week and leading into the weekend. According to the organization, the attacks spanned across three different ranches. "While many in the public romanticize the idea of seeing a wolf, local ranchers live with the daily reality of fear, stress and loss. Since calving began in early March, emotional strain has …
Multiple wolf attacks reported on ranches near Aspen over Memorial Day weekend
Ranchers are calling multiple wolf attacks on cattle over Memorial Day weekend in Pitkin County “devastating” and evidence Colorado Parks and Wildlife is failing to keep its promise to alert ranchers when wolves are in range of their livestock. The attacks occurred over three days on the Crystal River Ranch, in the Crystal River Valley, and on the Lost Marbles and McCabe ranches, in the Roaring Fork Valley. The first happened early Friday mor…

Wolf depredation claims two calf deaths in Crystal River, Roaring Fork valleys
A pack of wolves is reported to be responsible for the death of two calves and injuries to others recently in the Roaring Fork and Crystal River valleys, local ranchers said Tuesday. Colorado Parks and Wildlife is investigating multiple livestock depredations reportedly carried out by the Copper Creek wolf pack, according to Ginny and Tom Harrington, members of the Holy Cross Cattlemen’s Association and operators of the Crystal River Ranch south…
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