Recent News from our Blog

COSF 2025 Eco Scholarship winner Isabella Lee

Update on COSF’s 2025 Eco Scholarship Award

Isabella Lee is COSF’s new 2025 Environmental Studies scholar. Isabella, who graduated from Thousand Oaks High School, replaces Greceldy Hau as the recipient of one of COSF’s two scholarship awards because Greceldy will be pursuing a college major other than environmental studies. Isabella says that her determination to work toward a professional role in mitigating climate change stems from her Read more…

By Anne Russell, ago

The 2025 Trails Education Days writing contest winners; the 2026 event will be April 20 – 23

The 2025 Trails Education Days provided lessons on open space for 1,080 Conejo 4th grade students from all 17 CVUSD elementary schools during the week of April 28. Writing Contest The students who participate in Trails Education Days are invited to enter a letter-writing contest to describe some of the things they learned during their Trails Education Days experience. Two winners from Read more…

By Steve Clark, ago

New Speaker Series talk: Ellie Bolas presents “Lions and Fires and Humans, Oh Deer!”

Please join us for the live online presentation of “Lions and Fires and Humans, Oh Deer!” by ecologist Ellie Bolas. Currently a PhD candidate at the University of California Davis (UCD), Bolas will discuss how mule deer in the Santa Monica Mountains and Conejo Valley navigate a dynamic landscape of risks and rewards. Bolas’s research in partnership with the National Read more…

By Steve Clark, ago
Amgen volunteers

Watch the video of an Amgen volunteer team haul one ton of trash out of the Arroyo Conejo

On May 2, an enthusiastic team of 15 Amgen staffers joined COSCA Rangers Joe and Kari and COSF President Bill Miller and board member Anne Russell for a morning clean-up at the Arroyo Conejo. The video of the work can be seen below. The Amgen group removed about one ton of garbage that included cans and bottles, bicycle parts, gardening Read more…

By Anne Russell, ago

You have just 3 weeks to complete the Conejo Open Space Challenge for 2025!

The COS Challenge ends on May 31, a date that is rapidly approaching! Already several dozen people have completed all ten trails. If you would like to qualify for some of the fabulous prizes supplied by the Conejo Open Space Foundation, and Giant Bikes, at the final celebration on June 6, you should put on your hiking boots or riding Read more…

By Steve Clark, ago

Forest expert Kim Corella discusses new threat to our Conejo Valley oaks—see her recorded presentation

Kim Corella, who is Cal Fire’s Forest Pathologist with the Forest Entomology and Pathology Program for Southern California, addressed what could be a slow-moving disaster for our Coast Live Oaks in her Speaker Series talk “Oaks in Peril” on April 16. Having served with Cal Fire for the past 17 years, Corella has witnessed the goldspotted oak borer’s path of Read more…

By Anne Russell, ago