San Francisco Bay Osprey Days

San Francisco Bay Osprey Days Plus 3 Dolphin Charters boat trips 2hr, $45 Call 510-527-9622 During our second year science luncheon yet to be scheduled Sat.

Our 14th Annual San Francisco Bay Osprey Days, June 27 & 28, 2026, offers a mix of FREE guided walks in the Mare Island Shoreline Heritage Preserve and guided car caravans to Island nest sites. Learn About a Curious Phenomenon: Osprey nesting in San Francisco Bay
While compiling nesting data and networking with other volunteers, Golden Gate Raptor Observatory volunteer Baywide osprey nesting monit

ors Tony Brake and Harvey Wilson have made some pretty interesting discoveries. or Sun, Harv and Tony report on their findings about ospreys in the Bay and discuss next steps in monitoring and protecting nest sites. Following their presentation there will be what promises to be a lively conversation about what you can do to help out! No need to travel to far away mountain lakes and rivers to see nesting osprey up close. No need to even sneak a peek via a nest cam. Learn about and see more ospreys on Mare Island and the Napa River during the peak of nesting season. Headquartered at the Mare Island Shoreline Heritage Preserve visitor center with guided outings, boat trips, presentations, slide shows, a photography show, music and fish food – fish tacos and hopefully sushi, of course.

06/18/2026

Pretty thrilling! Our Mare Island Osprey and Bald Eagle nests are maturing again this season. I hope you’ll be planning to join us for our 14th Annual San Francisco Bay Osprey Days and San Francisco Bay Osprey Days Boat trips

06/02/2026

Incredible image of Osprey fishing. Some very interesting information. Our 14th Annual San Francisco Bay Osprey Days is planned June 27 & 28, 2026. The boat trip schedule is in the comments. Join us!

05/29/2026

Mouth of the Napa River/Mare island Strait breakwater on our April 25, 2026 boat trip aboard River Dolphin with Dolphin Charters. Join us one month from tomorrow and Sunday for our San Francisco Bay Osprey Days boat trips. Sat, June 27, 10am-12noon and 1pm-3pm and Sunday, June 28, 2026, 11-1pm are our Osprey Days Napa River Mare Island nature and history boat trips. $45 per person. Reserve now, because these trips really do sell out! And because of tides and mud built up in the Vallejo Marina, we only have 1 trip on Sunday, always in the past, 2. To Reserve, Call 510-527-9622. Leaves from Vallejo Marina K Dock. This is a easy to fit into your schedule 2-hour trip. I’ll join Barbara from Dolphin Charters as a River and Mare Island nature and history guide. Bring your brunch/lunch. Myrna Hayes 707-656-7852.

Btw: Do you think 35 per trip will fill the boat so the diesel fuel, which is at an all-time high, can be covered?!! I surely hope so.

Hello People of the Mare Island Shoreline Heritage Preserve. This Sat April 25, 2026, 10am-1pm is our Spring Osprey and ...
04/23/2026

Hello People of the Mare Island Shoreline Heritage Preserve. This Sat April 25, 2026, 10am-1pm is our Spring Osprey and Napa River Mare Island nature and history boat trip. $50 per person. Reserve the last 5-10 seats. Call 510-527-9622. Leaves from Vallejo marina K Dock. This is a full 3 hours. I’ll join Barbara from Dolphin Charters as a River and Mare Island nature and history guide. Bring your brunch/lunch. Myrna Hayes 707-656-7852.

Btw: 4,813 people have viewed this post. Do you think 35 will fill the boat so the diesel fuel, which is at an all-time high, can be covered?!!

You’ve been asking and waiting. Here it is! Attached is the flier with details for our upcoming Spring Osprey, Mare Island History and Napa River/Mare Island Strait Boat Trip aboard River Dolphin, with Dolphin Charters and me, Myrna Hayes River Guide.

This is a longer, more lovely trip on the River as we’ll judge the water conditions and potentially go out into the Carquinez Strait a bit on the south side of the Island, then on up-river under the 2 bridges and travel on the Napa River past restored wetlands of the San Pablo Bay Delta, American Canyon, the widest part of the River and actually into the Edgerly Island neighborhood, a charming riverfront grouping of quaint homes and piers, some rather lavishly upgraded, and about at the Brasos Bridge, we’ll turn downbound for our return trip back to Vallejo.

Bring a brunch with your favorite foods and what you’d like to drink. We’ll plan on serving hot coffee, hot water for tea and cold water as is Dolphin Charters’ tradition. This is a very, very rare opportunity. People ask us often and anticipate these river cruises. The boat is a catamaran motor launch. It is Coast guard certified for 47 passengers, but we limit to around 35. River Dolphin features an intimate indoor salon with tables and benches and grand windows for breathtaking views and a bathroom. You may choose to take a seat up top on the sunny, windy deck. Please join us!

To reserve/register call Dolphin Charters directly at 510-527-9622. Leave a message. They DO get back to you. Other questions/details: Dm Myrna Hayes, text/call 707-656-7852.

UPDATE: A NEW Youtube video of Building 505, created by Daniel Chappell. I wrote, “tears. Wow! Whew! You are unbelievabl...
02/26/2026

UPDATE: A NEW Youtube video of Building 505, created by Daniel Chappell. I wrote, “tears. Wow! Whew! You are unbelievable! Thank you. So beautiful.

Thank you for your lyrics some taken from my words. The ending is phenomenal. Breathtaking. You are my hero. Your Mare Island Vallejo piece was astonishing. Just thank you. I will be sharing with your blessing!”

https://www.youtube.com/watch?v=U-EKbBhjICc

These were my own words with my post aboutbrge dreams and demise of our first San Francisco Bay Flyway Festival Go Wildly Live Outdoors

A song of solace for my beloved friend Building 505, the Radio Communication facility for the US Navy for the Pacific before, during and after WWII. Built in 1939. Through Bldg 505, the mainland learned of bombing of Pearl Harbor. Some say although the Navy transitioned to low frequency radio in this building, that a Navy radio operator did have a high frequency radio over which he, and many, many other people throughout the world, are documented to have heard Amelia Earhart’s distress calls. This beautifully designed “streamline moderne”style architecture was eligible for listing on the National Reiner of Historic Places prior to the base closure. The nomination never took place. Our 1st San Francisco Bay Flyway Festival was held inside Building 505, hosted by the US Navy and our nonprofit at that time, Save the Bay and later, taken over by our Mare Island Heritage Trust. Sadly, two horrible things happened, maybe 3 to drive this lovely building into ruin. The US Fish and Wildlife Service was forced off Mare Island by the Navy at the behest of the City of Vallejo and our willing and eager to please the City, Congressman. The Navy instituted conditions for transfer, untenable for the USFWS and in fact, the DOD forced them to withdraw 66,000 acres of requests for fed-to-fed transfers. Mare Island became one of those withdrawals. Ironic, now. And, finally, the city made a grant application from the newly founded Depart of Homeland Security, to take the building and turn it into a police workout gym and indoor firing range. That didn’t get funded. The USGS occupied it for decades. Then, they were forced to move by a recent administration. Leaving Building 505 vulnerable. I traveled for 7 years to DC, lobbying and securing $2.4 mil in the Dept of Interior construction budget FY 00-03 for the federal
Match to a State and local match to convert it to a regional environmental education center for the $2.5 mil people on the “north shore of San Francisco Bay, who do not have such a facility. It was slated to serve as the San Pablo Bay National Wildlife Refuge headquarters in that @ renovation. What the hand of disregard, the disdain for natural and historic resources and the shear incompetence and malice by one city, can accomplish. Nothing short of criminal. Assets gifted by the American people squandered simply because they didn’t want it, but no one else could have it. Without a window, fully, covered in “tattoos” and fires set, likely msny of which are official “fire for hire” as we know do well on Mare island, and yet, she stands strong. We know each other intimately. We will love each other always as good friends, do. Building 505, you are always in my heart. Forever and always. Myrna Hayes San Francisco Bay Flyway Festival Go Wildly Live Outdoors

As I wrote a short intro for a repost to my personal page, more of my heart sickness came forward.
“Not my most uplifting or hopeful or happy post. I was drawn the two blocks from my normal drive to lock the San Pablo Bay Trail gate, towards Building 505, the former Commissary and Commisssary Annex for many years, this evening.

The sun was setting to its northwest. A man was walking out of it with his backpack. The colorful tatoos it is covered in, looked bleak, and disgraceful on this precious and sacred place of Military and Navy history.

And, as I took a few photos down the long drive from the main road, I felt this sinking feeling. Like all is lost. Like before me, lay a sunken treasure. All of our inheritance from the US Navy, gifted to our city 30 years ago, squandered.

While we have millions of dollars of historic maritime rolling stock, completely unrelated to Mare Island Naval Shipyard, presently floating along the quay, our direct link to by far, one of the most somber maritime stories in our Nation’s history, has the fabric shredded, burned, defaced and defamed. How does this honor the service of this Navy, this Shipyard and its dedicated Workers, this Building, and its sacred duty?

And, it seems that I am the sole person who cares. What’s up, people?! WHAT is wrong with this town, this regional community, this congressional district, this State? Shame. Shame. Shame.”

Built in 1939 as the Navy’s High-Frequency radio transmitting station, she stood proud in sleek Streamline Moderne style. Her waves carried the first word of...

News! Thank you Vallejo Times-Herald Writer, Thomas Gase and Photographer, Chris Riley, for featuring our San Francisco ...
02/12/2026

News! Thank you Vallejo Times-Herald Writer, Thomas Gase and Photographer, Chris Riley, for featuring our San Francisco Bay Flyway Festival Go Wildly Live Outdoors February 13-15, 2026 with its Opening Celebration Reception Fri 4-6pm, and Flyway Festival Pop-Ups Sat, 9am-3pm and Sun, under a dry tent, 9am-2:30pm with Myrna Hayes Birthday party continuing 2:30-3:30pm. All at Moschetti Coffee Roasting, 11 Sixth St, Vallejo.

Guided outings on Mare Island start at Mare Island Shoreline Heritage Preserve Fri, 10-11:30am with Myrna Hayes, Sat, 10-11:30am with Gordon McMahon and Sun, 9:30-11am with Joe Feller(only heavy rain cancels). Liz King meets you Sat and Sun 1:00-2:00pm at the large pond at the Mare Island San Pablo Bay Trail, where Myrna Hayes guides an evening pond visit and hike to the Bay’s edge 4:30-6pm.

Wild birds from Native Bird Connections come to the Flyway Festival Pop-Up Sun, 11:30am-12:45pm followed by a Birding 101 presentation at 1pm-2:15pm by Birding Enthusiast, Michelle Eliker. Sunday’s Pop-Up will be inside a tent and dry.

Regional outings are Lynch Canyon Birds of Prey Hike 10am-2pm on Saturday. And Sunday, a nature and birding walk 9am-11am at Benicia State Recreation Area with Naturalist Marcia Grefsrud(only heavy rain cancels) and a Birds of Prey Hike at Camp 4 in the Carneros area in Sonoma County with West County HawkWatch 10am-1pm(subject to cancellation if foul weather). Our scheduled Kayak outing for Sunday Feb 15, has been canceled and will be rescheduled for Sun, Feb 22, 11am-1pm. Stay tuned!

https://www.facebook.com/100063653286288/posts/1567065665425195/?mibextid=wwXIfr

Myrna Hayes will spend her birthday on Sunday in a place she truly loves, the wilderness — or what she likes to call “the wild near us.” Meanwhile, she’ll be frantically running a…

01/27/2026

I’m expecting sunshine this Thur morning, Jan 29, 2026, 9:30-10:45am for my WEEKDAY guided birding and history walk in my own neighborhood, St Vincent’s Hill in Vallejo. It is a National Register listed Historic District because the homes were built by and for Mare Island Shipyard Workers.

What a sweet, sweet memory from my post one year ago in National Alley in my neighborhood and what great synchronicity, as I’m hoping you will join me this Thursday, January 29, 2026, 9:30-10:45am for a visit to this very tree as we wander the alleys and streets listening for birds and checking out the historic houses from early Mare Island Worker’s homes, quirky landscapes and enjoy spectacular vistas of Mare Island and the Bay beyond. I’ve posted the flier with details in the comments.

Another weekend of Go Wildly Live Outdoors Guided Outings with me, Myrna HayesAll a part of the 30th San Francisco Bay F...
01/20/2026

Another weekend of Go Wildly Live Outdoors Guided Outings with me, Myrna Hayes
All a part of the 30th San Francisco Bay Flyway Festival Go Wildly Live Outdoors February 13-15, 2026.

Address

Vallejo, CA
94592

Telephone

+17076567852

Website

Alerts

Be the first to know and let us send you an email when San Francisco Bay Osprey Days posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Organization

Send a message to San Francisco Bay Osprey Days:

Share