Environmental Planning • Habitat Restoration • Biological Resources • Vegetation Management • Regulatory Compliance • Goat Grazing
13 Feb 2019
Arnold Reservoir located in the middle of the rolling ranchland of Tres Hermanos Ranch, a 2,500-acre preserve owned by City of Industry, between Diamond Bar and Chino Hills on Monday, January 28, 2019. (Photo by Watchara Phomicinda, The Press-Enterprise/SCNG)

Birds of Prey Controlling Invasive Rodents at Tres Hermanos’ Arnold Reservoir Dam

How the City of Industry is dealing with ground squirrels to avoid damage to the dam

Sage Environmental Group is assisting at the Tres Hermanos Ranch to access damage that ground squirrels have caused to the dam at the Arnold Reservoir on the ranch. A natural, pesticide-free, method of eradication was proposed by Sage biologists. Attracting birds of prey to hunt and kill the invasive rodents, avoids use of poisons which could enter the food chain.

“We are trying to address it in a way that is biologically sensitive,” said Alissa Cope, environmental planner and owner of Sage Environmental Group.

Drawing in birds of prey presented a challenge in the reservoir area that is surrounded mostly by grasslands. Sage proposed construction of a series of 23' wooden perches that can be used by birds to rest and spot prey. In mid-December four perches were installed to attract birds that pass overhead in the flyway over Tres Hermanos.

Learn more about the eradication program in this recent article published in the San Gabriel Valley Tribune. http://www.sgvtribune.com/how-the-city-of-industry-is-dealing-with-ground-squirrels-that-have-overwhelmed-tres-hermanos




Sage Environmental Group crew installing a raptor perch at the Tres Hermanos Ranch.
Sage Environmental Group crew installing a raptor perch at the Tres Hermanos Ranch.
15 Jan 2019
Goat Grazing for Wildland Management Presentation Jan 17 2019 Sage Environmental Group

Goat Grazing for Wildland Management – Presentation at SAROC WMA

Alissa Cope, Environmental Planner and Restoration Ecologist at Sage Environmental Group, will speak at the January 17, 2019 meeting of the Santa Ana River-Orange County Weed Management Area organization.

She will describe her experience deploying the Sage in-house herd of goats at client sites in Southern California. This natural method of weed control is gaining popularity and attention.

She will speak about the pros and cons of goat grazing, the critical need to target grazing for specific undesired plants to prevent site damage, and how grazing can enhance habitat and grassland restoration.

Visit Our Goat Grazing Website Page to Learn More


10 Sep 2018
California Nativie Plant Seed Farm

Volunteer: National Public Lands Day at Native Seed Farm

Restoration and Resilience

Join Irvine Ranch Conservancy at its Native Seed Farm on September 22, 2018 from 8:00am to 1:00pm to celebrate National Public Lands Day.
  • Learn: what local conservation managers are doing to restore habitat for Orange County’s native plants and animals.
  • Volunteer: roll up your sleeves and help pick some native seed that will be used on restoration projects for Irvine Ranch Conservancy
24 Aug 2018
Goats for Wildland Management at Irvine Ranch Conservancy

Goat Grazing For Wildland Management in Irvine

Sharing a wonderful blog article recently published by Irvine City Councilwoman Melissa Fox. "Say Hello to Irvine's Newest Fire Prevention Method - Goats!"

She describes the benefits of using goats to suppress non-native grasses and reduce the vegetation that provides fuel for wildfires. Thank you, Ms. Fox for informing her readers of the benefits of goat grazing and a "shout out" to our firm.

Sage Environmental Group's herd of goats is currently working in meadows on Irvine Ranch Conservancy open space lands. Learn more about this safe and cost-effective weed control method.