The recent capture of mountain lion P-129 is a significant event for the 101 Freeway wildlife crossing. The Wallis Annenberg Wildlife Crossing in Agoura Hills, set to open in fall 2026, recently witnessed a remarkable discovery near its forested overpass.
National Park Service biologists successfully captured and collared a female mountain lion, named P-129, inside the construction site. This marks the third mountain lion captured at the crossing site and the first since construction began. The capture was part of the National Park Service's Puma research project, which has been studying mountain lions in the Santa Monica Mountains since 2002, one of the longest urban mountain lion studies.
Beth Pratt, Regional Executive Director of the National Wildlife Federation, highlighted the importance of this capture. "The mountain lion was tracked traveling around the Wallis Annenberg Wildlife Crossing, right inside the construction site," she said. "Capturing one in the site's vicinity is a remarkable achievement."
The research project has been instrumental in understanding mountain lion travel patterns and landscape usage in the Santa Monica Mountains. The construction of the wildlife crossing over the 101 Freeway was prompted by the project's findings, as mountain lions are at risk of isolation due to the freeway. Genetic degradation among mountain lions, as evidenced by birth defects and sperm quality issues, raised concerns that led to the overpass's construction.
The primary goal of the crossing is to provide mating partners for mountain lions in the area, addressing the issue of sterility. The crossing, under construction since 2022, is on track to open next fall. The main structure over the 101 has been completed, featuring a habitat of native plants. Current efforts involve relocating utility lines and constructing a secondary structure over Agoura Road.
As the project nears completion, the team is anticipating the maiden passage of an animal next year, with P-129 and the dominant male in the area as potential candidates. This development underscores the importance of the wildlife crossing in preserving mountain lion populations and maintaining ecological connectivity in the region.
