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                              San Mateo County, California

— The April to June 2021 Newsletter is now available online —

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Sea Level Rise

Sea Level Rise: Why we need Nature Based Adaptation

3-part Webinar series: Thursdays 9 am - Noon, May 13, 20 and 27th
Jointly presented by
Sierra Club - Loma Prieta Chapter, San Francisco Bay Chapter and Redwood Chapter

Decision makers, their staff and the public need information and understanding of why nature-based adaptation to sea level rise is critical for cities around the Bay. This webinar provides an introduction to what these strategies are, how to plan for them and how to fund them.

Learn from notable experts in the field on building resilience for your community to the impacts of sea level rise. You will join a community of decision-makers who are working to protect their communities while improving the quality of life for residents and leaving a living legacy.

San Francisco Bay is a complex living ecosystem, essential to the ecology of California. As sea levels rise, urgent action is needed as rising levels seriously endanger the Bay's ecology in addition to threatening economic harm to housing, industry and critical infrastructure. Recent studies are confirming what scientists have believed, that traditional "armored" shorelines such as levees and concrete bulkheads offer less long-term protection than people might think. Now more scientists, policy makers and funding agencies have come to understand that "living shorelines" are valuable in protecting coastlines.

  1. May 13: What are Nature Based Adaptation Strategies
  2. May 20: Where to use Nature Based Adaptation
  3. May 27: How to Green the Project: Funding and Case Studies

More Information and Registration . Zoom link

Upcoming Meeting

May 13, 2021 at 7 pm via Zoom

Community Science: Long-Term Lessons: Perspectives from Three Years of Mushroom Monitoring in the Santa Cruz Mountains

Christian Schwartz, Research Associate at the Norris Center for Natural History (UCSC) and the Santa Barbara Botanical Garden, co-author of Mushrooms of the Redwood Coast

Additional Meeting Information

Additional Program Information

Christian Swartz
Christian Schwartz

Sequoia Audubon has canceled all field trips at this time.
We look forward to the future when we can see you in the field again.

We also encourage participation in the iNaturalist project "Meet your nature neighbors"

Gull Hybrids and Subspecies in San Mateo County

Kumlien's Gull
Iceland Gull (Kumlien's, Larus glaucoides kumlieni), first-year bird
Pilarcitos Creek Mouth, January 2019 (Alvaro Jaramillo)

The San Mateo County Birding Guide is proud and delighted to announce this new addition - from one of the best gull-watchers in the Americas!

Alvaro Jaramillo distilled his wisdom about four hybrids and two subspecies among our local overwintering gulls in this article, "Gull Hybrids and Subspecies in San Mateo County." With pictures from Alvaro and two other leading birders of our community - Donna Pomeroy and Malia DeFelice - this article will help to fill in some of those tricky in-between specimens we all find when searching through a large flock.

Here is a direct link to the new article.

The article can be found from the Birding Guide's home page . On the home page, there is a button near the top right that says "Look Here" - when clicked and held, this gives you a drop-down menu. Go to the subhead "Supplemental Guide Pages" and scroll to the Gull article. Please note other rich resources here and in the other subheads; for instance, Francis Toldi's excellent article on the habitats of the county (under Additional Resources) and Donna Pomeroy's Photographic Guide to the county's birds, as well as rough-and-ready checklists of other taxa. If you have a good idea for another article we need - float it! Improvements in the Guide are steady and ongoing, especially during the past year. New sites are being developed to add, and rarities over the years have been documented for each existing site in the guide.

Seward Gull
Seward Gull, Gazos Creek Beach Access, Nov 2019 (Malia DeFelice)

The San Mateo County Birding Guide is your resource for discovery, for archiving our birding history, and for studying questions of status and distribution at a local level! Suggestions, complaints and compliments are welcome! Write to us at smcbgeditor at

Baby Birds in Distress

There's a current Salmonella outbreak among Pine Siskins, you can find more information here.

If at all possible please leave the baby where it is because the adults will usually continue to feed and care for it.

To report a baby bird in distress please contact the Peninsula Humane Society Wildlife Rescue,
first call 650-340-7022, if directed take it to their center at 1450 Rollins Rd, Burlingame

New Project Page

SAS Cavity Nesters Recovery Program

Beverly Cronin has created a Cavity Nesters Recovery Program for Sequoia Audubon. Visit the new page to read all about it. She is looking for Western Bluebird, American Kestrel and Barn Owl Nest Box Monitors, too.

New Photo Resource

Birds of San Mateo County on iNaturalist

Donna Pomeroy has assembled a remarkable resource for birders - a photographic guide to the 240 most common bird species in San Mateo County! Here's the link (it's on iNaturalist).

Volunteers Wanted!

If you are interested in helping to shape the future of Sequoia Audubon Society please consider joining the
Board. While all members' ideas are welcome and encouraged, participating as a Board or Committee Member increases the opportunity to get involved in the "nuts & bolts" of the chapter. We have several open positions at this time, as shown below. Please have a look and let us know if you (or anyone you know!) are interested by contacting Sequoia Audubon at: (650) 529-1454 or

Open positions include:

  • Program Committee: Help arrange speakers for the monthly meetings.
  • See the Volunteer Page for other opportunities to help Sequoia Audubon Society
For more information about these open positions, please visit our Volunteer Page.

Radio Road birds

Photo by Donna Pomeroy

Is a Drone disturbing Wildlife?

What you can do if you see a drone disturbing wildlife:

  • Contact you local police "non-emergency" number.
  • Contact Department of Fish and Game by using the CalTIP program
  • Get the license plate number of the drone operator's vehicle.
  • Obtain a photo or video of the operator using the drone in a manner, which is disturbing the birds. However, do not put yourself in danger while doing this.

Have you tried our Birding Guide?


Please consider supporting Sequoia Audubon Society with a tax-deductable donation.

Donate to SAS Today
Your support is greatly appreciated.

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Sequoia Audubon has registered in the
Amazon Smile Program.

Amazon Smile is a simple and automatic way for you to support Sequoia Audubon every time you shop, at no cost to you. When you shop at, you'll find the exact same low prices, vast selection and convenient shopping experience as, with the added bonus that Amazon will donate a portion of the purchase price to your favorite charitable organization.

Tens of millions of products on AmazonSmile are eligible for donations. You will see eligible products marked "Eligible for AmazonSmile donation" on their product detail pages.

You use the same account on and AmazonSmile. Your shopping cart, Wish List, wedding or baby registry, and other account settings are also the same.

Learn Bird Sounds and Benefit
Sequoia Audubon Society!

Ever wish you knew how to identify birds by ear? It's one of the most essential birding skills, but one of the hardest to learn. Some folks from Seattle's Audubon chapter set out to make learning bird sounds truly accessible to everyone.

The result is Larkwire: a game-based learning system that uses cognitive techniques to make it easier to learn and remember bird sounds. Combining quiz games, an extensive sound library, and tips from renowned birdsong expert Michael O'Brien, Larkwire makes the learning process not only much easier but fun. Customizable levels from beginner to advanced invite both the backyard birder and the serious student to play and learn.

The company behind Larkwire is a social venture whose mission is not only to teach birdsong; a minimum of ten percent of all proceeds go to support conservation.

Sequoia Audubon Society has joined their affiliate program; enter our code when you purchase and we'll receive 20% of the purchase price! Our code: SEQAUD

Larkwire is now available as a native app
in the Apple App Store.

Learn bird sounds with Larkwire.
It's a great tool and your purchase supports Sequoia Audubon Society!

San Mateo County eBird Records

The immense power of the eBird database lends itself to instant availability of data.

Visit this link at eBird for San Mateo Co. sightings.

Sequoia Audubon Society protects native birds and other wildlife and their ecosystems in San Mateo County by engaging people of all ages in conservation, education, advocacy and enjoyment.

Join the Audubon Action Center
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The Sequoia Audubon Society is committed to equal opportunity and abides by all relevant laws and regulations.  All Sequoia Audubon programs and volunteer opportunities are administered without regard to race, gender, creed, national origin, age, political affiliation, marital status, sexual orientation, physical, mental or sensory handicap, or any other basis prohibited by law.  However, Sequoia Audubon reserves the right to exclude volunteers who do not support its goals.

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