Native Plantpalooza & Eco Fest is returning for a fourth year! Please join COSF for free annual educational festival featuring dozens of eco-related exhibitors and fun activities for kids. The community event will be held rain or shine on Saturday, October 11, from 10:00 a.m. to 2:00 p.m. at Lakeside, Read more
Congratulations are due once again to Mike Moessl, who submitted this photo of a sunrise seen from the Lang Ranch Open Space for our Summer “Four Seasons” photo contest. Mike also won the Spring wildflower challenge with his photo of woolly blue curls. For Autumn ‘Four Seasons’ contest our challenge subject is Read more
Wildlife ecologist Ellie Bolas shared discoveries from ongoing research, conducted in partnership with the National Park Service, about mule deer in the Santa Monica Mountains and Conejo Valley as COSF’s third Speaker Series presentation of 2025 on July 9. Bolas’ focus is on the impact of human-caused disturbance to the Read more
Congratulation to Mike Moessl, who submitted this photo of woolly blue curls that he took in the Lang Ranch Open Space! Photo challenge for the Summer “Four Seasons” contest is sunrises and sunsets as seen from the Conejo Open Spaces. If you would like to enter future contests, here are Read more
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
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
On April 16 at 7:00 p.m., Kim Corella, a forest pest specialist in the Forest Entomology and Pathology Program with Cal Fire, will join COSF as our second Speaker Series guest to talk about “Oaks in Peril.” She will address the history, current range and dangers posed to our native 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
We sincerely apologize, but widespread power outages today mean that we need to reschedule the online presentation, “Coyotes Among Us,” to Wednesday, January 29. The presentation will starts at 7:00 pm as previously planned. If you have already registered, the Zoom link you received will continue to work. Wildlife educator Dana Read more
