Save Mount Diablo
@savemountdiablo.bsky.social
Preserve, Defend, Restore, Educate, Enjoy.
Since 1971, we and our partners have protected over 120,000 acres on and around Mount Diablo.
https://lnk.bio/savemountdiablo
Since 1971, we and our partners have protected over 120,000 acres on and around Mount Diablo.
https://lnk.bio/savemountdiablo
Improvements for native Diablo Range wildlife, like endangered San Joaquin kit fox, have been confirmed for a solar project we commented on, like revegetating the repurposed land with native species that benefit wildlife, and designing and constructing solar arrays that include wildlife corridors.
February 10, 2026 at 5:06 PM
Improvements for native Diablo Range wildlife, like endangered San Joaquin kit fox, have been confirmed for a solar project we commented on, like revegetating the repurposed land with native species that benefit wildlife, and designing and constructing solar arrays that include wildlife corridors.
Join the Great Backyard Bird Count this coming weekend, February 13-16, to be a part of a worldwide research project helping scientists better understand and protect birds.
www.birdcount.org
📸: Diablo Range birds | Sean Burke
www.birdcount.org
📸: Diablo Range birds | Sean Burke
February 9, 2026 at 5:04 PM
Join the Great Backyard Bird Count this coming weekend, February 13-16, to be a part of a worldwide research project helping scientists better understand and protect birds.
www.birdcount.org
📸: Diablo Range birds | Sean Burke
www.birdcount.org
📸: Diablo Range birds | Sean Burke
Last week, we looked back on a year of conservation accomplishments during our State of the Mountain Address. We awarded Save Mount Diablo Board President Jim Felton with our Mountain Star Award in recognition of his outstanding contributions to conservation.
📸: Emily Sherwood
📸: Emily Sherwood
February 6, 2026 at 5:03 PM
Last week, we looked back on a year of conservation accomplishments during our State of the Mountain Address. We awarded Save Mount Diablo Board President Jim Felton with our Mountain Star Award in recognition of his outstanding contributions to conservation.
📸: Emily Sherwood
📸: Emily Sherwood
Another big win for protecting Dublin’s Urban Limit Line, and the last remaining open space between Dublin and Livermore! The Dublin City Council meeting voted on February 3, 2026 to not appeal our legal victory over Measure II.
Photos by Scott Hein and Juan Pablo Galván Martínez
Photos by Scott Hein and Juan Pablo Galván Martínez
February 5, 2026 at 5:01 PM
Another big win for protecting Dublin’s Urban Limit Line, and the last remaining open space between Dublin and Livermore! The Dublin City Council meeting voted on February 3, 2026 to not appeal our legal victory over Measure II.
Photos by Scott Hein and Juan Pablo Galván Martínez
Photos by Scott Hein and Juan Pablo Galván Martínez
Caught on camera in the northern Diablo Range, a golden eagle soars over the landscape.
A study found that the northern Diablo Range has the largest breeding population of golden eagles on the planet. Golden eagles are apex predators, making them vital for our ecosystems.
📸: Sean Burke
A study found that the northern Diablo Range has the largest breeding population of golden eagles on the planet. Golden eagles are apex predators, making them vital for our ecosystems.
📸: Sean Burke
February 4, 2026 at 5:07 PM
Caught on camera in the northern Diablo Range, a golden eagle soars over the landscape.
A study found that the northern Diablo Range has the largest breeding population of golden eagles on the planet. Golden eagles are apex predators, making them vital for our ecosystems.
📸: Sean Burke
A study found that the northern Diablo Range has the largest breeding population of golden eagles on the planet. Golden eagles are apex predators, making them vital for our ecosystems.
📸: Sean Burke
Speak up to protect our public lands, including Mount Diablo State Park! The Trump administration plans to open nearly 2 million acres of public lands to oil and gas drilling and fracking.
Please join the Zoom meeting tonight from 5 to 6:30 PM.
empsi.zoom.us/webinar/regi...
Please join the Zoom meeting tonight from 5 to 6:30 PM.
empsi.zoom.us/webinar/regi...
February 3, 2026 at 5:03 PM
Speak up to protect our public lands, including Mount Diablo State Park! The Trump administration plans to open nearly 2 million acres of public lands to oil and gas drilling and fracking.
Please join the Zoom meeting tonight from 5 to 6:30 PM.
empsi.zoom.us/webinar/regi...
Please join the Zoom meeting tonight from 5 to 6:30 PM.
empsi.zoom.us/webinar/regi...
In a win for open space, in early December the Contra Costa County Board of Supervisors approved sending a measure to renew the county Urban Limit Line to the June 2026 ballot.
We look forward to helping this key land protection measure win at the ballot box.
📸: Stephen Joseph and Scott Hein
We look forward to helping this key land protection measure win at the ballot box.
📸: Stephen Joseph and Scott Hein
January 27, 2026 at 5:05 PM
In a win for open space, in early December the Contra Costa County Board of Supervisors approved sending a measure to renew the county Urban Limit Line to the June 2026 ballot.
We look forward to helping this key land protection measure win at the ballot box.
📸: Stephen Joseph and Scott Hein
We look forward to helping this key land protection measure win at the ballot box.
📸: Stephen Joseph and Scott Hein
We're grateful everyday for Mount Diablo's beauty. Enjoy this late afternoon timelapse video of Mount Diablo, as it presides above the clouds.
📸: Sean Burke
📸: Sean Burke
January 26, 2026 at 5:06 PM
We're grateful everyday for Mount Diablo's beauty. Enjoy this late afternoon timelapse video of Mount Diablo, as it presides above the clouds.
📸: Sean Burke
📸: Sean Burke
Discover your next escape from civilization on the Cañada Trail in the Los Vaqueros watershed! Marked by blue and live oaks, manzanita, toyon, sagebrush, and other native species, it offers a fantastic challenge and gorgeous views.
savemountdiablo.org/blog/los-vaq...
📸: Scott Hein
savemountdiablo.org/blog/los-vaq...
📸: Scott Hein
January 23, 2026 at 5:03 PM
Discover your next escape from civilization on the Cañada Trail in the Los Vaqueros watershed! Marked by blue and live oaks, manzanita, toyon, sagebrush, and other native species, it offers a fantastic challenge and gorgeous views.
savemountdiablo.org/blog/los-vaq...
📸: Scott Hein
savemountdiablo.org/blog/los-vaq...
📸: Scott Hein
Behind the scenes with our stewardship team! Our Land Stewardship Manager, Roxana, can be seen planting natives at our Mangini Preserve pollinator gardens.
We’ve got an array of plants that will be getting new homes in our restoration sites.
savemountdiablo.org/blog/steward...
📸: Kendra Smith
We’ve got an array of plants that will be getting new homes in our restoration sites.
savemountdiablo.org/blog/steward...
📸: Kendra Smith
January 22, 2026 at 5:04 PM
Behind the scenes with our stewardship team! Our Land Stewardship Manager, Roxana, can be seen planting natives at our Mangini Preserve pollinator gardens.
We’ve got an array of plants that will be getting new homes in our restoration sites.
savemountdiablo.org/blog/steward...
📸: Kendra Smith
We’ve got an array of plants that will be getting new homes in our restoration sites.
savemountdiablo.org/blog/steward...
📸: Kendra Smith
Toyon (Heteromeles arbutifolia) is a California native; during winter, its branches become nearly overloaded with bundles of red berries. These berries are a lifeline for many of California's bird's and mammals during the cold winters.
Source: calscape.org and calflora.org
📸: Emily Sherwood
Source: calscape.org and calflora.org
📸: Emily Sherwood
January 21, 2026 at 5:05 PM
Toyon (Heteromeles arbutifolia) is a California native; during winter, its branches become nearly overloaded with bundles of red berries. These berries are a lifeline for many of California's bird's and mammals during the cold winters.
Source: calscape.org and calflora.org
📸: Emily Sherwood
Source: calscape.org and calflora.org
📸: Emily Sherwood
European wildlife is making a huge comeback, thanks to successful conservation and reintroduction efforts!
It's never too late to make a difference for nature.
ourworldindata.org/europe-mamma...
It's never too late to make a difference for nature.
ourworldindata.org/europe-mamma...
January 20, 2026 at 5:06 PM
European wildlife is making a huge comeback, thanks to successful conservation and reintroduction efforts!
It's never too late to make a difference for nature.
ourworldindata.org/europe-mamma...
It's never too late to make a difference for nature.
ourworldindata.org/europe-mamma...
On clear days, you can see all the way to Mount Diablo on this scenic Briones Regional Park trail.
Check out our online trail guides on our website for more local hikes like this!
savemountdiablo.org/experience/f...
📸: Karen Bakar
Check out our online trail guides on our website for more local hikes like this!
savemountdiablo.org/experience/f...
📸: Karen Bakar
January 16, 2026 at 5:03 PM
On clear days, you can see all the way to Mount Diablo on this scenic Briones Regional Park trail.
Check out our online trail guides on our website for more local hikes like this!
savemountdiablo.org/experience/f...
📸: Karen Bakar
Check out our online trail guides on our website for more local hikes like this!
savemountdiablo.org/experience/f...
📸: Karen Bakar
Get to know Mount Diablo better through Las Positas college's upcoming California Naturalist course: Exploring the Mount Diablo Range!
Sign up here: tinyurl.com/CalNatMountDiablo
📸: Scott Hein
Sign up here: tinyurl.com/CalNatMountDiablo
📸: Scott Hein
January 15, 2026 at 5:04 PM
Get to know Mount Diablo better through Las Positas college's upcoming California Naturalist course: Exploring the Mount Diablo Range!
Sign up here: tinyurl.com/CalNatMountDiablo
📸: Scott Hein
Sign up here: tinyurl.com/CalNatMountDiablo
📸: Scott Hein
Did you know that the Nunn-Paulsen inholding in Mount Diablo State Park was almost developed? Fortunately, Bob Nunn chose conservation, a wise decision which we are incredibly grateful for.
savemountdiablo.org/press-releas...
Architectural rendering courtesy of Bob Nunn
savemountdiablo.org/press-releas...
Architectural rendering courtesy of Bob Nunn
January 12, 2026 at 5:04 PM
Did you know that the Nunn-Paulsen inholding in Mount Diablo State Park was almost developed? Fortunately, Bob Nunn chose conservation, a wise decision which we are incredibly grateful for.
savemountdiablo.org/press-releas...
Architectural rendering courtesy of Bob Nunn
savemountdiablo.org/press-releas...
Architectural rendering courtesy of Bob Nunn
🦌 Oh deer! 🦌
Look who was caught on camera on our land.
Our wildlife cameras help us understand which animals inhabit the land we protect, so that we know how to best steward and manage the land.
Not only do they capture gorgeous images like these, they're an important part of our work!
Look who was caught on camera on our land.
Our wildlife cameras help us understand which animals inhabit the land we protect, so that we know how to best steward and manage the land.
Not only do they capture gorgeous images like these, they're an important part of our work!
January 7, 2026 at 5:06 PM
🦌 Oh deer! 🦌
Look who was caught on camera on our land.
Our wildlife cameras help us understand which animals inhabit the land we protect, so that we know how to best steward and manage the land.
Not only do they capture gorgeous images like these, they're an important part of our work!
Look who was caught on camera on our land.
Our wildlife cameras help us understand which animals inhabit the land we protect, so that we know how to best steward and manage the land.
Not only do they capture gorgeous images like these, they're an important part of our work!
SAVE DEL PUERTO CANYON: Please ask the Bureau of Reclamation to choose the “no action” alternative in their environmental impact statement for the proposed Del Puerto reservoir ASAP!
Send your email to [email protected].
📸: Haley Sutton, Scott Hein, and Cooper Ogden
Send your email to [email protected].
📸: Haley Sutton, Scott Hein, and Cooper Ogden
January 6, 2026 at 5:01 PM
SAVE DEL PUERTO CANYON: Please ask the Bureau of Reclamation to choose the “no action” alternative in their environmental impact statement for the proposed Del Puerto reservoir ASAP!
Send your email to [email protected].
📸: Haley Sutton, Scott Hein, and Cooper Ogden
Send your email to [email protected].
📸: Haley Sutton, Scott Hein, and Cooper Ogden
Happy National Bird Day! 🐦🦅
To celebrate, we're sharing a few of the awesome birds we've spotted in the Diablo Range.
1. greater roadrunner
2. California condor
3. acorn woodpecker
4. golden eagle
The Diablo Range is a haven for birds; some areas support as many as 200 species.
📸: Scott Hein
To celebrate, we're sharing a few of the awesome birds we've spotted in the Diablo Range.
1. greater roadrunner
2. California condor
3. acorn woodpecker
4. golden eagle
The Diablo Range is a haven for birds; some areas support as many as 200 species.
📸: Scott Hein
January 5, 2026 at 5:02 PM
Happy National Bird Day! 🐦🦅
To celebrate, we're sharing a few of the awesome birds we've spotted in the Diablo Range.
1. greater roadrunner
2. California condor
3. acorn woodpecker
4. golden eagle
The Diablo Range is a haven for birds; some areas support as many as 200 species.
📸: Scott Hein
To celebrate, we're sharing a few of the awesome birds we've spotted in the Diablo Range.
1. greater roadrunner
2. California condor
3. acorn woodpecker
4. golden eagle
The Diablo Range is a haven for birds; some areas support as many as 200 species.
📸: Scott Hein
Enjoy a glimpse of the beautiful Nunn-Paulsen inholding, which was generously donated to us by Bob Nunn this December.
This remote and lush piece of the mountain is teeming with life, and turning green as the mountain soaks up the winter rains.
📸: Emily Sherwood and Mary Nagle
This remote and lush piece of the mountain is teeming with life, and turning green as the mountain soaks up the winter rains.
📸: Emily Sherwood and Mary Nagle
January 4, 2026 at 5:02 PM
Enjoy a glimpse of the beautiful Nunn-Paulsen inholding, which was generously donated to us by Bob Nunn this December.
This remote and lush piece of the mountain is teeming with life, and turning green as the mountain soaks up the winter rains.
📸: Emily Sherwood and Mary Nagle
This remote and lush piece of the mountain is teeming with life, and turning green as the mountain soaks up the winter rains.
📸: Emily Sherwood and Mary Nagle
Happy New Year! California State Parks is starting the new year right with a day of more than 80 free adventures in over 60 parks on New Year's Day.
Start 2026 on the right foot and get outside!
Check out what adventures are available near you: www.parks.ca.gov/firstdayhikes
📸: Scott Hein
Start 2026 on the right foot and get outside!
Check out what adventures are available near you: www.parks.ca.gov/firstdayhikes
📸: Scott Hein
January 1, 2026 at 5:03 PM
Happy New Year! California State Parks is starting the new year right with a day of more than 80 free adventures in over 60 parks on New Year's Day.
Start 2026 on the right foot and get outside!
Check out what adventures are available near you: www.parks.ca.gov/firstdayhikes
📸: Scott Hein
Start 2026 on the right foot and get outside!
Check out what adventures are available near you: www.parks.ca.gov/firstdayhikes
📸: Scott Hein
The sun is setting on 2025, but it's not too late to support our work this year!
Each donation, no matter the size, will help us start the new year strong. Help us launch into 2026, and protect more of Mount Diablo's wild lands.
savemountdiablo.org/donate
📸: Larry Porter
Each donation, no matter the size, will help us start the new year strong. Help us launch into 2026, and protect more of Mount Diablo's wild lands.
savemountdiablo.org/donate
📸: Larry Porter
December 31, 2025 at 5:02 PM
The sun is setting on 2025, but it's not too late to support our work this year!
Each donation, no matter the size, will help us start the new year strong. Help us launch into 2026, and protect more of Mount Diablo's wild lands.
savemountdiablo.org/donate
📸: Larry Porter
Each donation, no matter the size, will help us start the new year strong. Help us launch into 2026, and protect more of Mount Diablo's wild lands.
savemountdiablo.org/donate
📸: Larry Porter
Tomorrow is the last day to give in 2025!
Thanks to you, we've celebrated many victories for Mount Diablo and the mountain range that sustains it.
We're so close to our goal; your support could bring us over the finish line just in time for the new year!
savemountdiablo.org/donate
Thanks to you, we've celebrated many victories for Mount Diablo and the mountain range that sustains it.
We're so close to our goal; your support could bring us over the finish line just in time for the new year!
savemountdiablo.org/donate
December 30, 2025 at 5:03 PM
Tomorrow is the last day to give in 2025!
Thanks to you, we've celebrated many victories for Mount Diablo and the mountain range that sustains it.
We're so close to our goal; your support could bring us over the finish line just in time for the new year!
savemountdiablo.org/donate
Thanks to you, we've celebrated many victories for Mount Diablo and the mountain range that sustains it.
We're so close to our goal; your support could bring us over the finish line just in time for the new year!
savemountdiablo.org/donate
Take a minute to turn your volume up and enjoy the sounds of Mount Diablo's Mitchell Creek. 🔊
The creeks have come alive in the Diablo region―marking the start of winter on the mountain.
📸: Laura Kindsvater
The creeks have come alive in the Diablo region―marking the start of winter on the mountain.
📸: Laura Kindsvater
December 26, 2025 at 5:02 PM
Take a minute to turn your volume up and enjoy the sounds of Mount Diablo's Mitchell Creek. 🔊
The creeks have come alive in the Diablo region―marking the start of winter on the mountain.
📸: Laura Kindsvater
The creeks have come alive in the Diablo region―marking the start of winter on the mountain.
📸: Laura Kindsvater
Exciting news for the Diablo Range!
The Santa Clara Valley Habitat Agency is proposing to construct up to three wildlife crossings along Pacheco Pass―one of the two freeways that cut through the Diablo Range, impeding wildlife movement.
ceqanet.lci.ca.gov/2025100438
📸: tule elk | Sean Burke
The Santa Clara Valley Habitat Agency is proposing to construct up to three wildlife crossings along Pacheco Pass―one of the two freeways that cut through the Diablo Range, impeding wildlife movement.
ceqanet.lci.ca.gov/2025100438
📸: tule elk | Sean Burke
December 23, 2025 at 5:04 PM
Exciting news for the Diablo Range!
The Santa Clara Valley Habitat Agency is proposing to construct up to three wildlife crossings along Pacheco Pass―one of the two freeways that cut through the Diablo Range, impeding wildlife movement.
ceqanet.lci.ca.gov/2025100438
📸: tule elk | Sean Burke
The Santa Clara Valley Habitat Agency is proposing to construct up to three wildlife crossings along Pacheco Pass―one of the two freeways that cut through the Diablo Range, impeding wildlife movement.
ceqanet.lci.ca.gov/2025100438
📸: tule elk | Sean Burke
We're getting closer to our year-end fundraising goal. Help us cross the finish line!
You are inspiring young people to connect with nature in meaningful ways.
This year, 641 students participated in our educational programs on Mount Diablo.
savemountdiablo.org/donate
📸: Emily Sherwood
You are inspiring young people to connect with nature in meaningful ways.
This year, 641 students participated in our educational programs on Mount Diablo.
savemountdiablo.org/donate
📸: Emily Sherwood
December 22, 2025 at 5:03 PM
We're getting closer to our year-end fundraising goal. Help us cross the finish line!
You are inspiring young people to connect with nature in meaningful ways.
This year, 641 students participated in our educational programs on Mount Diablo.
savemountdiablo.org/donate
📸: Emily Sherwood
You are inspiring young people to connect with nature in meaningful ways.
This year, 641 students participated in our educational programs on Mount Diablo.
savemountdiablo.org/donate
📸: Emily Sherwood