Biologist Daniel Hofstadter and a tiny band of researchers have been carrying out the most expansive barred owl removal effort to date. It’s a project that has killed more than 1,000 owls in Northern California since 2019 across nearly 10 million acres. The biologists believe that their work protecting spotted owls — a species that launched a conservation movement more than three decades ago — will ultimately help safeguard the ecosystem in one of the last old growth forests in the West. Host Martine Powers speaks with national climate reporter Joshua Partlow about the motivation behind the barred owl removal, the brief history of spotted owls in the area, and the ornithologist who carries out the shootings.Today’s show was produced by Bishop Sand. It was edited by Monica Campbell and mixed by Justin Garrish. Subscribe to The Washington Post here.