Outdoornews April 7, 2021 Concerned about declining populations of mule deer, which help sustain Colorado's nearly $1 billion hunting industry, Colorado Parks and Wildlife decided in 2016 to conduct an experiment to see if limited killing of mountain lions and black bears would have an impact on deer numbers. DENVER — The U.S. Fish and Wildlife Service illegally helped pay for a Colorado program to kill dozens of mountain lions and black bears in an experiment to determine if the predators were partly responsible for declining mule deer populations, a federal judge has ruled. U.S. District Court Chief Judge Marcia Krieger in Denver found that Fish and Wildlife failed to do a required analysis of the program’s environmental effects, possibly so it could fast-track federal funding for most of the $4 million program.