Conejo Open Space Foundation

Wildlife researcher Ellie Bolas reveals the private lives of local mule deer—see her recorded presentation

Behavioral ecologist Ellie Bolas shared discoveries she has made during her ongoing research concerning mule deer in the Santa Monica Mountains and Conejo Valley as COSF’s third Speaker Series presentation of 2025 on July 9. Bolas’s focus is on the impact of human-caused disturbance to the deer’s habit, including wildfire. Read more…

By Anne Russell, 23 hours07/31/2025 ago

_Special Announcement Photo Contest Past Trails

Spring ‘Four Seasons’ photo contest winner is Mike Moessl

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…

By Anne Russell, 1 month06/29/2025 ago

COSF 2025 Eco Scholarship winner Isabella Lee

_Special Announcement Accomplishments Environment Scholarships

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 Read more…

By Anne Russell, 2 months06/15/2025 ago

_Special Announcement Accomplishments TED Updates Trails Education Days

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 Read more…

By Steve Clark, 2 months06/13/2025 ago

_Special Announcement Environment Speaker Series Wildlife

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 Read more…

By Steve Clark, 2 months06/13/2025 ago

_Special Announcement Conejo OS Challenge

The 2025 Conejo Open Space Challenge ends on May 31!

There are only a few days left until The Challenge ends this Saturday! That means there’s still time to check out two or three trails if you’re almost finished, or to cram in all ten if you haven’t started. Here are some more great photos submitted by the participants. Over Read more…

By Steve Clark, 2 months05/28/2025 ago

_Special Announcement Accomplishments COSCA Environment Trailwork

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 Read more…

By Anne Russell, 2 months ago

_Special Announcement Conejo OS Challenge

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 Read more…

By Steve Clark, 3 months05/09/2025 ago

_Special Announcement Conejo OS Challenge

Third photo gallery from the 2025 Conejo Open Space Challenge

There are 5 weeks left in the 2025 Conejo Open Space Challenge. That’s plenty of time to get out and explore the 10 Challenge trails, even if you haven’t started yet. The great photos are continuing to roll in! Here are some more of them. If you would like to Read more…

By Steve Clark, 3 months04/23/2025 ago