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 Read more…
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 Read more…
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 Read more…
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 Read more…
Dana Stangel, founder and executive director of Teranga Ranch Wildlife, shared her expertise and advice about how to live side by side with our most visible urban canid, the coyote. On January 29, 2025, as COSF’s first 2025 Speaker Series guest, Stangel presented “Coyotes Among Us.” Scroll down to watch Read more…
The Conejo Open Space Conservation Agency (COSCA), with support from COSF, held its final monthly trail work day of 2024 on Saturday, December 14. Even though it was the busy holiday season, 15 volunteers showed up at Wildwood Regional Park to clear the overgrown Eagle Point Trail. COSCA Rangers Joe, Nick Read more…
COSCA’s Fall Trail Work Day at Westlake Community Park brought in 70 volunteers of all ages to improve the Wishbone Trail on Saturday, October 19. After the trails were cleaned up, COSF provided a delicious lunch for all and sponsored a fun raffle with $800 worth of gifts for those Read more…
COSF launched Native Plantpalooza & Eco Fest in the fall of 2022 with the goal of producing a free outdoor live event to celebrate and support the Conejo Valley’s rich biodiversity. The community festival’s goal is to educate and inspire attendees about native plants, water-wise gardening and more sustainable living. Read more…
The September 28 trail work day took place at the Rancho Potrero Open Space, just south of Dos Vientos, and coincided with National Public Lands Day. Participants were given a one-day pass to federal lands, valid for a whole year! Volunteers worked on three separate projects: reconstructing a drainage lens, Read more…
The first all-volunteer Arroyo Conejo Creek cleanup, on September 21, resulted in over 20 volunteers removing 2 to 3 tons of trash from the creek; that works out to an average of over 200 lbs. per person! Scroll down to see a photo gallery of people in action. This was Read more…
Lions and fires and humans, Oh deer!
How mule deer in the Santa Monica Mountains and Conejo Valley navigate a dynamic landscape of risks and rewards
A virtual presentation by
Ellie Bolas
on Wednesday July 9 at 7:00 pm.