Durango Herald 4-5-21
https://durangoherald.com/articles/371132-federal-judge-ends-colorados-plan-to-kill-hundreds-of-mountain-lions

Project called for removing half the population to study impacts on deer

In part... "The U.S. Fish and Wildlife Service needed to conduct its own environmental analysis of Colorados predator management plan before funding long-term projects that kill bears and cougars, Judge Marcia Krieger ruled last week. She ruled the federal agency should have conducted its own environmental review not relied on another agencys study when it helped pay for the killing of as many as 230 mountain lions between Leadville and Salida as part of a Colorado Parks and Wildlife plan to bolster mule deer herds."