Court Clears Path for Catalina Island Deer Eradication as Legal Challenge Falters
A Los Angeles County judge has tentatively denied a request to block the Catalina Island Conservancy's plan to remove roughly 2,000 non-native mule deer from Santa Catalina Island, allowing lethal removal operations to begin as early as this month. The tentative ruling, issued Tuesday, September 1, 2026, rejected a legal challenge brought by Safari Club International and its partners, who had asked the court to stop a project scheduled to begin baiting and shooting deer in September 2026. A final ruling is expected within 90 days of the tentative decision, if not sooner.
The conservancy, a nonprofit that controls 88% of Santa Catalina Island, plans to eliminate the island's entire deer population over five years. As a first step, the conservancy estimates that 200 deer will be killed with rifles over the next two months. Limited removal work is scheduled throughout September and October 2026 in the Middle Ranch area, according to an operations notice posted by the conservancy. The deer will be removed by ground-based specialists rather than helicopters, after an aerial culling proposal was dropped in 2024.
Mule deer are not native to the island. They were brought there by hunters for sport roughly a century ago and have since multiplied in the absence of natural predators. Their ecological impact has become the conservancy's central justification for eradication. California State University, Bakersfield plant biologist Anna L. Jacobsen studied the deer's interaction with island vegetation following the major fires of 2006 and 2007. Her research helped the conservancy understand how deer browsing on a native shrub has enabled the spread of invasive grasses that ignite more easily and carry fire faster across the island's terrain. The conservancy has separately been awarded $2 million to remove flammable invasive plants.
Catalina Island is home to more than 60 species of plants and animals found nowhere else on Earth, and the conservancy has framed the deer removal as essential to protecting that endemic biodiversity. Pepe Barton, the conservancy's director of communications, said killing the deer was "never our first choice" and was a necessary step to protect the island's native plants and animals. The conservancy examined contraception and sterilization as alternatives but deemed those methods infeasible for a population of this size.
The legal challenge came from an unlikely coalition. Safari Club International, a hunting advocacy organization, and its partners moved to halt the eradication in early August 2026. Their request for a preliminary injunction (a court order that would have paused the project while the case proceeded) argued for stopping the project before operations could begin, but the county judge's tentative denial has allowed the conservancy to proceed, at least for now.
The political terrain has been similarly contested. Los Angeles County Supervisor Janice Hahn, an outspoken critic of the cull, asked California Governor Gavin Newsom to intervene in early September 2026. The plea was unsuccessful. The conservancy operates under a state permit that authorizes the removal, and the state has not moved to suspend it.
The conservancy's own data reveals the gap between recreational hunting and population control. During the 2024 mule deer hunting season, which ended December 26, only 379 deer were harvested out of 754 issued tags. Mule deer are the only animals eligible for hunting on conservancy property. The conservancy has since announced a "final deer hunting season," signaling the end of managed sport hunting as the transition to full eradication approaches.
The broader context here is one of difficult ecological triage on islands where introduced species have few natural checks. The conservancy manages nearly 165 miles of recreational roads and trails and 62 miles of unspoiled beaches and coves, and its mandate extends well beyond deer management to the comprehensive stewardship of one of California's most ecologically distinctive landscapes. Kate Wheeler, named president and CEO of the conservancy, now oversees a project that has drawn opposition from both animal welfare advocates and hunting groups, an unusual political alignment that has nonetheless failed to slow the eradication timeline.
What comes next hinges on the final court ruling expected within 90 days. If the tentative denial holds, the five-year eradication plan will proceed in phases, with ground-based specialists carrying out removals across the island's interior. If the judge reverses course, the conservancy's permit and operational schedule could face renewed legal constraints. The episode has crystallized a tension that conservation managers confront repeatedly in island ecosystems: whether the ecological harm caused by a non-native species justifies lethal removal at scale, and whether courts, politicians, or land managers should have the final word.
