Conejo Open Space Foundation
  • About Us
    • Our Story…
      • Our Story
      • Board of Directors
      • Accomplishments
    • History…
      • History of the Conejo Open Space
      • Historic Conejo Open Space Promotional Videos
    • Connect With Us
    • Links to Our Friends
    • What are these: COSCA, COSTAC, COSF, CRPD…
    • Privacy Policy as of 2019-06-04
  • Support Us!
    • Overview
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    • More Ways To Give
  • Get Involved
    • Open Space Programs
    • Event Signup
    • Volunteer!
    • Conejo Open Space Challenge 2025: March 1 to May 31
    • Speaker Series
    • Native Plantpalooza & Eco Fest
    • Trail Building and Restoration
    • Trails Education Days for 4th Graders
      • Video Overview
      • Recent Updates for Trails Education Days
      • Trails Education Days Videos
    • “Four Seasons” photo contest
      • Sign up for notifications!
    • Scholarships for Environmental Studies
      • How to Apply
      • Scholarships News
  • Volunteering
    • Volunteering Overview
    • Apply to Volunteer
    • Volunteer Report Forms
      • Adopt-A-Trail Report Form
      • Bike Bell Report Form
      • Trail Ambassadors Report
      • Trail Watch Report
      • Log your Trail Work Events
    • Trail Work Notification Signup
    • COSCA Volunteer Manual
  • News
    • Latest News
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    • Press Releases
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  • Explore Open Spaces
    • Open Space Trails and Maps
      • Map Overview
      • Compact Trail Route Guides
      • Conejo Canyons Open Space (Western Plateau)
      • Dos Vientos and Rancho Potrero Open Spaces
      • Lang Ranch, Woodridge and Oakbrook Regional Park
      • Los Robles Open Space area
      • Wildwood Park
      • Other Trails including North Ranch
      • List of Maps
    • Things to do and see
      • Open Space Activities
      • Native Plants
      • Non-Native Plants
      • Wildlife
      • Flora and Fauna Videos
    • Be Prepared
    • Rules of the Trails

COSCA

Accomplishments COSCA Environment Wildlife

COSF again contributes to the Conejo Open Space Bird Study

The Conejo Open Space Foundation has provided a further $2000 donation to the Conejo Open Space Conservation Agency (COSCA) in support of an annual bird monitoring program. COSCA contracts with the Western Foundation of Vertebrate Zoology (WFVZ) to carry out these extensive studies. The results are a significant aid for Read more…

By Steve Clark, 5 years09/23/2020 ago
COSCA Safety Trails

All Thousand Oaks trails are closed for the next two days

The Conejo Open Space Conservation Agency has just announced that all Thousand Oaks trails will be closed Sunday and Monday Sept 6-7 due to the extreme heat. Numerous heat-related rescues are tying up critical rescue and fire personnel. Closing COSCA trails will reduce the burden on safety staff and ensure Read more…

By Steve Clark, 5 years09/05/2020 ago
COSCA Where in the Conejo

The May 8th Where in the Conejo Contest photo was of the Western Plateau Trail

Congratulations to Don Brusselars of Somis who provided the correct answer and was selected as the winner. Thanks to all who responded! The Western Plateau Trail leads from Conejo Center Drive in Newbury Park down to Hawk Canyon in the Conejo Canyons Open Space, then up to the Western Plateau Read more…

By Steve Clark, 5 years05/15/2020 ago
COSCA

COSCA Trails now open every day!

As of Saturday May 9, trails in the Conejo Valley managed by the Conejo Open Space Conservation Agency (COSCA) will be open on weekends again. However, restrictions are still in place to help avoid transmission of the COVID-19 virus and keep trail users safe. Social distancing is expect and most Read more…

By Steve Clark, 5 years05/10/2020 ago
COSCA

Conejo Valley Trails to partially reopen on weekdays

Beginning on Wednesday April 22, Conejo Open Space Conservation Agency (COSCA) trails in Thousand Oaks will be open weekdays from 6:00 am until 6:00 pm. They will remain closed on the weekends from 5:00 pm Friday until 6:00 am Monday morning. Full details can be seen on COSCA’s press release. Read more…

By Steve Clark, 5 years04/20/2020 ago
COSCA

New Trail Closures: Rancho Sierra Vista/Satwiwa trails to close during the weekend

The National Park Service has announced that Ventura County Trails within the Santa Monica Mountains National Recreation Area (SMMNRA) will be closed over weekends until further notice. All trails, parking areas, visitor centers and other facilities in LA County have already been closed 24/7 until further notice. What is new Read more…

By Steve Clark, 5 years04/03/2020 ago
Conejo OS Challenge COSCA

All Conejo Valley Trails and Open Spaces are closed until further notice. The Open Space Challenge is suspended.

We at the Conejo Open Space Foundation are sad to inform you that all trails in the Conejo Valley Open Space are closed until further notice. The text of the press release from the Conejo Open Space Conservation Agency (COSCA) announcing the closure follows. You can also view a PDF Read more…

By Steve Clark, 5 years03/28/2020 ago
COSCA

Help Keep Our Trails Open!

A message from the Conejo Open Space Conservation Agency: Make everyone’s safety a priority 1. Think First of staying home and avoiding others. We are in a health emergency rather than a holiday, and this is about saving lives. 2. Walk Instead. Before planning a hike that requires a car, Read more…

By Steve Clark, 5 years03/24/2020 ago
COSCA

COSCA has a new logo!

The Conejo Open Space Conservation Agency, COSCA, starts off the new year of 2020 with a brand new logo, shown to the right. The earlier one, below, dated to the time that COSCA was created in 1977. It has served well over the years, but the new one is certainly Read more…

By Steve Clark, 5 years01/13/2020 ago
Accomplishments COSCA Wildlife

Conejo Open Space Bird Study

COSF recently donated $2,500 to COSCA to help fund a bird monitoring program COSCA initiated this year.  COSF has also committed up to $2,000 each year for 2019 and 2020.  The monitoring will be conducted by the Western Foundation of Vertebrate Zoology (WFVZ) and will provide valuable scientific information regarding baseline Read more…

By Steve Clark, 7 years11/01/2018 ago

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Hestia | Developed by ThemeIsle

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.

Register to watch!