peninsula-birding
Received From Subject
9/14/26 12:06 pm maliadances via groups.io <maliadances...> Re: [pen-bird] Heermann's gull at Coyote Point
9/13/26 8:33 pm Dominik Mosur via groups.io <dominikmosur...> Re: [pen-bird] Heermann's gull at Coyote Point
9/13/26 8:29 pm Ross Millikan via groups.io <rmillika...> [pen-bird] Heermann's gull at Coyote Point
9/13/26 10:53 am Peter Metropulos via groups.io <pjmetrop...> [pen-bird] SEABIRD FEEDING FRENZY at Ano Nuevo State Park
9/11/26 7:33 pm Michael Long via groups.io <mghl2508...> Re: [pen-bird] Coastal Rarities around Half Moon Bay, 9/11/26
9/11/26 7:10 pm Christopher Hayward via groups.io <p_t_nymph...> [pen-bird] Coastal Rarities around Half Moon Bay, 9/11/26
9/10/26 11:47 am Kent Forward via groups.io <kforward...> [pen-bird] Lucy's Warbler - Rancho Corral de Tierra - lower El Granada area 9/10/26
9/10/26 11:42 am Ronald- Thorn via groups.io <Tronthorn...> [pen-bird] Clay-colored Sparrow and other migrants
9/9/26 5:37 pm San Mateo County Bird Alliance via groups.io <office...> [pen-bird] Thurs. Sept. 10 - A Bird's-Eye View of the Bay Area Ridge Trail
9/9/26 2:18 pm Barbara Kossy via groups.io <bkossy...> [pen-bird] Seen from my kayak
9/8/26 5:44 pm Ronald- Thorn via groups.io <Tronthorn...> [pen-bird] Moss Beach seawatch 9/8
9/7/26 5:55 pm Ronald- Thorn via groups.io <Tronthorn...> [pen-bird] Baird's Sandpiper and other recent sightings
9/6/26 1:24 pm Leonie Batkin via groups.io <Lbatkin111...> [pen-bird] Siberian Pipit-Importance of having a prepared mind and Kris Olson's legacy
9/3/26 12:16 pm Joe Morlan via groups.io <jmorlan...> [pen-bird] Just for fun
9/2/26 5:39 pm Barbara Kossy via groups.io <bkossy...> [pen-bird] Wandering Tattler
9/1/26 2:46 pm Barbara Kossy via groups.io <bkossy...> [pen-bird] Princeton Marsh, Red-necked Phalaropes
9/1/26 12:44 pm Barbara Kossy via groups.io <bkossy...> [pen-bird] Red-necked phallaropes
8/30/26 8:19 pm Ross Millikan via groups.io <rmillika...> Re: [pen-bird] Wandering tattler at Coyote Point
8/30/26 8:13 pm Ross Millikan via groups.io <rmillika...> [pen-bird] Wandering tattler at Coyote Point
8/27/26 6:02 pm Ronald- Thorn via groups.io <Tronthorn...> [pen-bird] Brewer's Sparrow and migration
8/27/26 11:52 am Alane_El_Granada via groups.io <alanegray...> [pen-bird] Bullock’s Oriole with Avian Pox in El Granada - August 27
8/23/26 5:06 pm basquebirder via groups.io <allaboutbirds...> [pen-bird] American Redstart Point San Bruno - SF Bay Trail 08/23
8/21/26 4:25 pm Ronald- Thorn via groups.io <Tronthorn...> [pen-bird] Pacific Golden-Plover, Redwood Shores
8/20/26 9:43 am Joe Morlan via groups.io <jmorlan...> [pen-bird] Heermann's Gull (Larus heermanni) - Juvenile
8/19/26 4:35 pm Peter Metropulos via groups.io <pjmetrop...> [pen-bird] BEAN HOLLOW STATE BEACH Seawatch, 19 August 2026
8/19/26 1:02 pm Ronald- Thorn via groups.io <Tronthorn...> [pen-bird] Another Baird's Sandpiper
8/18/26 10:07 pm maliadances via groups.io <maliadances...> [pen-bird] Three Baird's Sandpipers - Pomponio State Beach 8/18/26
8/17/26 4:48 pm Ronald- Thorn via groups.io <Tronthorn...> [pen-bird] Semipalmated Sandpiper and recent sightings bayside
8/17/26 4:11 pm Joe Morlan via groups.io <jmorlan...> [pen-bird] Royal Tern at San Gregorio State Beach.
 
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Date: 9/14/26 12:06 pm
From: maliadances via groups.io <maliadances...>
Subject: Re: [pen-bird] Heermann's gull at Coyote Point
Hi Ross, I would say Heermann's Gull are very casual to rare on the San Mateo County Bayside. If San Mateo had more geographically refined filters, I would probably set "the bayside filter" to flag Heermann's Gull for more details.  But we only have one countywide filter to work with and we need to set it to accommodate coastal numbers.  Santa Clara can set their countywide  filter to flag for more details as they do not have a coastline. Your photo is only the 4th photo ever taken of Heermann's Gull on the bayside in San Mateo County on eBird for all time. Thank you for uploading  your photo of the Heermann's Gull  to your eBird checklist!Malia
On Sunday, September 13, 2026 at 08:29:34 PM PDT, Ross Millikan via groups.io <rmillika...> wrote:

I don't know how rare they are here, but I had a Heermann's gull at Coyote Point this afternoon.  Photo and location at https://www.inaturalist.org/observations/400096050


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Date: 9/13/26 8:33 pm
From: Dominik Mosur via groups.io <dominikmosur...>
Subject: Re: [pen-bird] Heermann's gull at Coyote Point
Not super common that far down inside the bay but I wouldn’t call it rare.

d

On Sun, Sep 13, 2026 at 20:29 Ross Millikan via groups.io <rmillika=
<gmail.com...> wrote:

> I don't know how rare they are here, but I had a Heermann's gull at Coyote
> Point this afternoon. Photo and location at
> https://www.inaturalist.org/observations/400096050
>
>
>


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Date: 9/13/26 8:29 pm
From: Ross Millikan via groups.io <rmillika...>
Subject: [pen-bird] Heermann's gull at Coyote Point
I don't know how rare they are here, but I had a Heermann's gull at Coyote Point this afternoon.  Photo and location at https://www.inaturalist.org/observations/400096050


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Date: 9/13/26 10:53 am
From: Peter Metropulos via groups.io <pjmetrop...>
Subject: [pen-bird] SEABIRD FEEDING FRENZY at Ano Nuevo State Park
On September 11, I witnessed a massive concentration of seabirds while scoping at Ano Nuevo State Park. Positioned on the bluff near the pond I scanned the bay between the island and the Santa Cruz County line.SOOTY SHEARWATERS were streaming north at a rate of hundreds-per-minute. I gave up counting after I reached 20,000 birds. More birds were arriving from the south and settled in to land on the water along with several thousand BRANDT'S CORMORANTS. I arrived at an estimate of 100,000 Sooty Shearwaters. I managed to pick out one PINK-FOOTED SHEARWATER among them.Adding to the spectacle were:  COMMON MURRE, 2800;  MARBLED MURRELET,25; ELEGANT TERN, 1125; COMMON TERN,1.
On the pond were was an early drake RING-NECKED DUCK, and 2 VAUX'S SWIFTS were feeding with swallows.Later,at PESCADERO STATE BEACH, I saw a WANDERING TATTLER on the rocks near the creek mouth.


Peter J.Metropulos


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Date: 9/11/26 7:33 pm
From: Michael Long via groups.io <mghl2508...>
Subject: Re: [pen-bird] Coastal Rarities around Half Moon Bay, 9/11/26
Hi all,

I would like to add to the list of today’s central coast rarities by
mentioning a Tennessee Warbler and an unidentified Baypoll Warbler, both
along Tunitas Creek. The Tennessee was on the old trail to the beach here
(37.3577391, -122.3967488) and the Baypoll was further up the road near the
intersection with Tunitas Creek Ranch Rd here
(37.3762822, -122.3753263)
.

Also on wednesday I had 25 southbound White-faced Ibis from Pomponio Creek
Beach, a female type American Redstart on lower Gazos Creek about 150 yards
before the intersection with Cloverdale
(37.1861544, -122.3431609)
, a beautiful male American Redstart on Old Woman Creek (37.1818715,
-122.3381878), also on Old Woman Creek I ran into another birder who’s
merlin had picked up Barred Owl and Northern Waterthrush a little after the
bridge over Gazos Creek, for however much that’s worth. I was unable to
find either although I did hear two hoots of which had the right pitch and
tone for Barred Owl, although sounded like no call of theirs that i’m
familiar with. Later on Canyon Road, I found a female type Blackburnian
Warbler here
(37.2163664, -122.3452678).

Fall is definitely coming in hot right now!! Looking forward to seeing what
people find in the coming weeks.

Happy birding,
Michael Long
Redwood Shores

On Fri, Sep 11, 2026 at 7:09 PM Christopher Hayward via groups.io
<p_t_nymph...> wrote:

> Hi All,
> Today I birded near Half Moon Bay mostly checking riparian areas. First
> stop was the Half Moon Bay WTP where as I was walking down to the creek two
> White-faced Ibis flew over heading south.
> Next I stopped at the willow patch near the pond along Verde Rd. almost
> immediately I heard a strong chip note and spotted a Chestnut-sided Warbler
> flitting around low in the vegetation, I was joined a short time later by
> young birder Nathan Malick and mom Kathleen who also got nice looks at the
> warbler.
> We decide to check other areas nearby, along Tunitas Creek road where the
> road dips down about 1/2 mile east of Hwy 1, we made a brief stop where
> Nathan spotted a Willow Flycatcher in the Eucalyptus Trees by the pull out
> on the south side of the road.
> Certainly the highlight of the day though was as we walked along Seaside
> School Rd. near San Gregorio, we came upon a nice flock halfway along the
> road where Nathan spotted a Blackburnian Warbler, soon after that suddenly
> a Gray Catbird showed itself below the flock, seen well by all of us,
> disappearing before we could grab a photo. We spent another 30 minutes or
> so before we saw it fly across the road and bury itself deep in the thicket
> on the south side of the road, great work by Nathan to get at least
> document photos of this very skulky bird!
> Really a fun day, especially to be with such a good young birder for
> several county lifers!
> Photo, links below
>
> https://ebird.org/checklist/S391931846 Blackburnian Warbler and Gray
> Catbird
>
> https://ebird.org/checklist/S391959752 Chestnut-sided Warbler
>
> Chris Hayward
> Half Moon Bay
>
>
>


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Date: 9/11/26 7:10 pm
From: Christopher Hayward via groups.io <p_t_nymph...>
Subject: [pen-bird] Coastal Rarities around Half Moon Bay, 9/11/26
Hi All,
Today I birded near Half Moon Bay mostly checking riparian areas. First stop was the Half Moon Bay WTP where as I was walking down to the creek two White-faced Ibis flew over heading south.
Next I stopped at the willow patch near the pond along Verde Rd. almost immediately I heard a strong chip note and spotted a Chestnut-sided Warbler flitting around low in the vegetation, I was joined a short time later by young birder Nathan Malick and mom Kathleen who also got nice looks at the warbler.
We decide to check other areas nearby, along Tunitas Creek road where the road dips down about 1/2 mile east of Hwy 1, we made a brief stop where Nathan spotted a Willow Flycatcher in the Eucalyptus Trees by the pull out on the south side of the road.
Certainly the highlight of the day though was as we walked along Seaside School Rd. near San Gregorio, we came upon a nice flock halfway along the road where Nathan spotted a Blackburnian Warbler, soon after that suddenly a Gray Catbird showed itself below the flock, seen well by all of us, disappearing before we could grab a photo. We spent another 30 minutes or so before we saw it fly across the road and bury itself deep in the thicket on the south side of the road, great work by Nathan to get at least document photos of this very skulky bird!
Really a fun day, especially to be with such a good young birder for several county lifers!
Photo, links below

https://ebird.org/checklist/S391931846 Blackburnian Warbler and Gray Catbird

https://ebird.org/checklist/S391959752 Chestnut-sided Warbler

Chris Hayward
Half Moon Bay


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Date: 9/10/26 11:47 am
From: Kent Forward via groups.io <kforward...>
Subject: [pen-bird] Lucy's Warbler - Rancho Corral de Tierra - lower El Granada area 9/10/26
Hello birders - 
I had the excitement of seeing a Lucy's Warbler in Rancho this morning at the edge of the Clipper Ridge neighborhood at approximately 37.515105, -122.487744. Unfortunately it was visible only very briefly before it flew over the a fence into the neighborhood and I wasn't able to relocate. Thankfully the tiny gray short-tailed finely-billed warbler was kind enough to show me its reddish rump as it flew away in agitation! 
I visited my two closest patches from my house before work: Princeton by the Sea Park and lower Rancho EG. A nice assortment of local and migrant birds it seemed just about everywhere actively foraging included Northern Yellow Warblers, Wilson's Warblers, Warbling Vireos, the delightful "yank yank yank" of a Red-breasted Nuthatch (appears we're in the midst of an irruption of this species at the moment as I've had them at multiple coastside locations of late), and Western Tanagers (which seem particularly abundant all up and down the coastside at the moment).
Happy migration!Kent ForwardEl Granada


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Date: 9/10/26 11:42 am
From: Ronald- Thorn via groups.io <Tronthorn...>
Subject: [pen-bird] Clay-colored Sparrow and other migrants
This morning, there was a Clay-colored Sparrow in the Sweet Fennel field next to the Coyote Point Yacht Club parking lot. There were at least ( 20 ) Northern Yellow Warblersin field and along the public access trail. A Western Flycatcher along the trail. The first arrival I have noted was a White-crowned Sparrow ( pugetensis ) in the field. Yesterday,I did a stop in Colma. Migrants finally on the move! Here is a list of what was noted, Willow Flycatcher, ( 4 ) Western Warbling Vireos, Red-breasted Nuthatch, ( 15 ) NorthernYellow Warblers, ( 2 ) Townsend's Warblers and ( 21 ) Western Tanagers.
Ron Thorn


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Date: 9/9/26 5:37 pm
From: San Mateo County Bird Alliance via groups.io <office...>
Subject: [pen-bird] Thurs. Sept. 10 - A Bird's-Eye View of the Bay Area Ridge Trail
*Tomorrow 7:00 pm Zoom*

The Bay Area Ridge Trail is an ambitious vision for a connected trail along the ridgelines surrounding San Francisco Bay, linking people, parks, and open spaces. More than 400 miles are open today, but completing the trail requires thoughtful partnerships to navigate private lands, sensitive habitats, road crossings, and other complex gaps.

Ryan Fritz is a Trail Planner with the Bay Area Ridge Trail Council, working with public agencies, conservation organizations, landowners, and partners to advance trails. His background includes outdoor science education, conservation trail work in Utah, and a thru-hike of the Appalachian Trail before starting trail planning and GIS work in the Bay Area.

Ryan will share how the Ridge Trail moves trail connections from ideas to reality while balancing public access with protection of the landscapes they pass through. The presentation will highlight current work in San Mateo County, including the newly opened Skyline Watershed Ridge Trail, trail planning around La Honda, and Peninsula studies. He will also share examples from the South Bay and San Francisco, where Ridge Trail projects intersect with habitat restoration, interpretation, safety, and stewardship.

The talk will also introduce the Ridge Trail's Very Important Trail (VIT) program, which offers guided experiences on restricted or managed-access lands while building relationships with landowners and conservation partners. For birders and conservationists, these projects offer a window into the opportunities and challenges of connecting people with the Bay Area's open spaces while protecting the habitats and wildlife that make those landscapes special.

*Register* : https://bit.ly/4zXA7WU


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Date: 9/9/26 2:18 pm
From: Barbara Kossy via groups.io <bkossy...>
Subject: [pen-bird] Seen from my kayak
Yesterday afternoon (4pm) a friend and I got some great views of the Northern Gannet roosted on the center of the island breakwater in Princeton Harbor. He stood up and played around a bit with some dried vegetation, then displayed and squawked! He did that about three times. In the display he spread his wings, looked up, squawked and dipped his rear. It was nice to see him in action!

This morning (9am) my husband and I went out into waters of Half Moon bay on our double kayak, specifically to see the Common Murre creche activity. There were small groups of adult murres, perhaps the dads, and the chicks. When we stopped to listen we could hear the “Grok! Meep! "call and response of the dads and chicks. I’ve been seeing more than the occasional dead murre in the water, or on a beach. I even saw one up on land, perhaps relocated by a coyote at Fitzgerald Marine Reserve. It got me wondering what happens to the chicks if the adult dies. Out on the water today I saw an adult escorting two chicks. One was much smaller than the other. Was one perhaps an orphan, that joined up with another adult and step sibling? We also saw groups of many chicks with a few adults.

The Brown Pelicans and their pesky Heermans Gull companions provided a bit more drama.
We watched pelicans dive and catch fish.(15 ft away!) The gulls were right there hoping for a score. The pelicans had a work around: reposition the fish in the gullet underwater. Then raise their head and swallow. Nothing for the gulls. The gulls seem to use a lot of energy squabbling with each other to get access to a chosen pelican.

A Common Loon flew overhead, low.

It’s so lovely to be out there and have the elegant terns, pelicans, murres and gulls all so close. There are still lots of birds, including shorebirds in the inner harbor. But really, the guano is so thick on the stone breakwaters, they look snow covered, and the smell is overpowering in the weather we’ve been having, so I’ve skipped paddling the inner harbor.

If you’ve thought about learning to kayak, give it a try. It’s a great way to see birds. Note: you cannot take kayaks rented from HMB kayaks out of the harbor, but there’s plenty to see in the harbor. I don’t even bother to bring binoculars.

Barbara Kossy,
Moss Beach

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~






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Date: 9/8/26 5:44 pm
From: Ronald- Thorn via groups.io <Tronthorn...>
Subject: [pen-bird] Moss Beach seawatch 9/8
This morning, I did a seawatch from Moss Beach with Leonie joining me part of the time.  A partial list of what was noted during the two hour seawatch. Northbound were( 20,300 ) Sooty Shearwaters with a Pink-footed Shearwater tagging along. Terns southbound were a Royal Tern, a Forster's Tern not often noted on the coast and ElegantTerns attracting ( 13 ) Parasitic Jaegers. Later back over on the bayside stopping at the Nob Hill Pond, we were surprised to note ( 28 ) Red-necked Phalaropes. A high numberfor the pond!
Ron Thorn, Leonie Batkin


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Date: 9/7/26 5:55 pm
From: Ronald- Thorn via groups.io <Tronthorn...>
Subject: [pen-bird] Baird's Sandpiper and other recent sightings
Today, a Baird's Sandpiper was with Western and Least Sandpipers viewed from the trail at the Ravenswood Salt Ponds R1/R2. The shorebirds had come in from the bayduring a high tide. Sightings the last few days. An earlier visit to the Ravenswood Salt Pond SF2, there was a Wilson's Phalarope. Wilson's Phalarope is a rare-uncommonmigrant in the county. Elegant and Forster's Terns were in quite a stir, when a juvenile Parasitic Jaeger came in off the bay to the roosting terns on the mudflats. This timeof year is when the Parasitic Jaegers do come into San Francisco Bay looking for terns. They will come in as far south into the bay at Coyote Point. Lingering on the late sideon the bay was a juvenile Least Tern being fed on the shell bar at Bair Island at the mouth of Steinberger Slough on the 3rd.  A southbound Purple Martin was noted during a skywatch at home in Redwood Shores. 
Ron Thorn


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Date: 9/6/26 1:24 pm
From: Leonie Batkin via groups.io <Lbatkin111...>
Subject: [pen-bird] Siberian Pipit-Importance of having a prepared mind and Kris Olson's legacy
Hello Peninsula Birders-
We received our Western Birds Volume 57, No. 3, 2026 thisweek and were pleased to read, on page 185, that Ron’s sighting of a Siberian Pipit at RadioRoad (Redwood Shores) on October 27, 2008 has been accepted by the California Bird RecordsCommittee (CBRC).  Ron was contacted toprovide a write-up and any available photos. Fortunately, we were able to access Kris Olson’s photos taken on October28, 2008.  To see the photos Kris’s 2ndreport on October 28, 2008 to Peninsula Birding includes a link toFlicker.  Other observers sent reports,positive and negative, to Peninsula Birding through October 31, 2008.    
This record is an example of having a prepared mind.  Ron expresses in his write-up that he hadlooked for years through pipit flocks hoping to see this Asian pipit, which waspreviously considered a race of American Pipit.  Ron’s lengthy write-up can be seen in hisinitial report to Peninsula Birding dated October 27, 2008.  This record is also in the San Mateo CountyeBird record as Siberian Pipit, entered in the Sequoia Audubon Data (now SanMateo County Bird Alliance). 

Great to have this species in the San Mateo Countyrecords! 

Ron Thorn

Leonie Batkin
"Chance favors the prepared mind."  Louis Pasteur 





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Date: 9/3/26 12:16 pm
From: Joe Morlan via groups.io <jmorlan...>
Subject: [pen-bird] Just for fun
Coyote Point, 21 August 2026

Can you spot the Goldeneye?
--
Joseph Morlan, Pacifica, CA


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Date: 9/2/26 5:39 pm
From: Barbara Kossy via groups.io <bkossy...>
Subject: [pen-bird] Wandering Tattler
I was out kayaking this afternoon on a rising tide. I saw a wandering
tattler on the western outer breakwater. Characteristic bobbing. Grey shore
bird. No visible wingband, and larger than a spotted sandpiper.

Barbara Kossy
Moss Beach, California
Mobile: 650-430-1094


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Date: 9/1/26 2:46 pm
From: Barbara Kossy via groups.io <bkossy...>
Subject: [pen-bird] Princeton Marsh, Red-necked Phalaropes
Around noon today watched 4 Red-necked Phalaropes on the southernmost pond at Princeton Marsh.
One was walking on the edge of the pond, foraging.

Barbara Kossy

I tried to send this out earlier, but I think it failed to send.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Barbara Kossy
278 California Ave
Moss Beach, CA 94038
650-430-1094
<bkossy...>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~






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Date: 9/1/26 12:44 pm
From: Barbara Kossy via groups.io <bkossy...>
Subject: [pen-bird] Red-necked phallaropes
Four just seen feeding in the south pond at Princeton marsh.
One was even walking along the edge, feeding.


Barbara Kossy
Moss Beach, California
Mobile: 650-430-1094


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Date: 8/30/26 8:19 pm
From: Ross Millikan via groups.io <rmillika...>
Subject: Re: [pen-bird] Wandering tattler at Coyote Point
There were also a number of elegant terns.  Photo of one at https://www.inaturalist.org/observations/395997900


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Date: 8/30/26 8:13 pm
From: Ross Millikan via groups.io <rmillika...>
Subject: [pen-bird] Wandering tattler at Coyote Point
I had a wandering tattler at Coyote Point today.  It was shortly after the afternoon high tide and out on the point beyond the marina.  Photo and coordinates at https://www.inaturalist.org/observations/395997905


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Date: 8/27/26 6:02 pm
From: Ronald- Thorn via groups.io <Tronthorn...>
Subject: [pen-bird] Brewer's Sparrow and migration
The past week, there has been a trickle of passerine migrants at locations along the bayside. Today, a wave of Yellow Warblers arrived at a number of locations along thebayside. A Brewer's Sparrow was foraging in the Sweet Fennel along the public access trail at the end of Sem Lane in Belmont. A number of you who had visited Sem Lanewould be shocked to see it has become a pile of trash along the trail from the homeless that have moved in. Police officers have been called in a number of times talkingto the homeless. The situation has also happen across the creek along the public access from the homeless living there too.
Ron Thorn


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Date: 8/27/26 11:52 am
From: Alane_El_Granada via groups.io <alanegray...>
Subject: [pen-bird] Bullock’s Oriole with Avian Pox in El Granada - August 27
At first I was thrilled to have a Bullock’s Oriole in a shrub on my back slope, but then I saw the growth on her head - looks like Avian Pox. This is my first experience with Avian Pox - so sad. I think she’s immature - let me know if you think differently.
Photos in eBird list:
https://ebird.org/atlascalifornia/checklist/S387431849

Alane Gray
El Granada


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Date: 8/23/26 5:06 pm
From: basquebirder via groups.io <allaboutbirds...>
Subject: [pen-bird] American Redstart Point San Bruno - SF Bay Trail 08/23
Hi all,
I just came across a male AMRE on the SF Bay Trail, right around here (37.6549501, -122.3781661). Kind of sneaky, but actively calling. Started in the fennel and then flew into oaks/acacias across the trail. This is right where the BTBlue was a few years back, if people remember that.

I might as well mention that yesterday 08/22, there were 2 Red-breasted Nutchatches amomg other migrants like Townsend’s and Yellow Warblers at Mori Point in Pacifica.

Cheers to migration,
Cédric Duhalde


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Date: 8/21/26 4:25 pm
From: Ronald- Thorn via groups.io <Tronthorn...>
Subject: [pen-bird] Pacific Golden-Plover, Redwood Shores
Leonie and I were at Preserve Park in Redwood Shores. It was a high tide on the bay and Black-bellied Plovers had come in to rest on the mudflats. Scoping through theBlack-bellied Plovers, there was a molting Pacific Golden-Plover. Viewing was from the public access trail looking into the fence-in tidal marsh.
Ron Thorn, Leonie Batkin 


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Date: 8/20/26 9:43 am
From: Joe Morlan via groups.io <jmorlan...>
Subject: [pen-bird] Heermann's Gull (Larus heermanni) - Juvenile
17 August 2026. San Gregorio State Beach, San Gregorio, California, USA.

This one had me scratching my head. I have never before encountered this
plumage as it is not normally seen away from breeding colonies. It is a
juvenile with bleached pale fringing on its mantle, scapulars and tertials.
They breed primarily in Mexico with only one known California colony at
Robert's Lake, Seaside, 80 miles to the South. It is an open question
whether this bird came from that tiny colony, or from another closer
unknown breeding site? We see plenty of uniformly dark gray-brown immatures
from Mexico, but not juveniles. Dark legs and grayish foreneck help
distinguish it from similar species. I'd be interested in hearing any
additional sightings of this individual or other recently fledged juvenile
Heermann's Gulls.
--
Joseph Morlan, Pacifica, CA


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Date: 8/19/26 4:35 pm
From: Peter Metropulos via groups.io <pjmetrop...>
Subject: [pen-bird] BEAN HOLLOW STATE BEACH Seawatch, 19 August 2026
This morning I conducted a seawatch at BEAN HOLLOW STATE BEACH , 8:00-10:00. Ocean was calm with no breeze and heavy overcast.Humpback Whales were feeding a mile or so offshore.Very little diversity,but relatively high numbers of shearwaters and jaegers.Northbound SOOTY SHEARWATERS averaged 300-per-minute, resulting in a total of 36,000 individuals.Among them were PINK-FOOTED SHEARWATERS,with 13 birds observed.I saw at least 14 JAEGERS, 10 of which were POMARINE.An OSPREY was flying in from offshore carrying a fish and being pursued by gulls.A PEREGRINE  heading offshore may have been hunting phalaropes.
Surprising was a LEAST TERN flying north just beyond the beach. Although small numbers of this species are seen at SM County bayland locations  at times,coastal records are very few.
Peter J.Metropulos


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Date: 8/19/26 1:02 pm
From: Ronald- Thorn via groups.io <Tronthorn...>
Subject: [pen-bird] Another Baird's Sandpiper
This morning, I had a juvenile Baird's Sandpiper with juvenile Western and Least Sandpipers at the Ravenswood Salt Pond R1/R2. The Baird's was seen along the trail scopingout to a pond.  Access to the trail is from the frontage road on the north side of the Dumbarton Bridge. Baird's have been noted often at the salt pond at this time of the year with the arrival of juveniles. Also on the pond were ( 31 ) Red-necked Phalaropes.
Ron Thorn


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Date: 8/18/26 10:07 pm
From: maliadances via groups.io <maliadances...>
Subject: [pen-bird] Three Baird's Sandpipers - Pomponio State Beach 8/18/26
Hi Penbirders,
Yesterday 8/17, Chris and I looked for the Baird's Sandpiper, first reported and found   by Scott and Linda Terrill in the morning. We found it quite easily foraging with Western and Least Sandpipers on the north side of the lagoon. Today 8/18, we returned to Pomponio State Beach, in part looking for the Royal Tern reported by Joe Morlan at San Gregorio beach .We ran into Roy Carlson and the three of us ventured onto Pomponio beach.  To our surprise we found (3) Baird's Sandpipers at the north side of the lagoon! photos here https://ebird.org/atlascalifornia/checklist/S384805470

Malia DeFelice and Chris Hayward


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Date: 8/17/26 4:48 pm
From: Ronald- Thorn via groups.io <Tronthorn...>
Subject: [pen-bird] Semipalmated Sandpiper and recent sightings bayside
Today, I noted a juvenile Semipalmated Sandpiper with Westerns and Least along Belmont Slough near the observation deck at Preserve Park in Redwood Shores.Size, in-between Western and Least, fresh plumage the upperparts with pale fringed scapulars appearing scaly, lacking the rufous scapular band of a juvenile Western,short straight blunt-tipped black bill, black legs. Juvenile shorebird arrival I have first noted have been Semipalmated Plover, Greater Yellowlegs and Red-neckedPhalarope the past week. A little late on arrival are the first I have noted of Green-winged Teal on the 15th and Northern Shoveler the 16th at Redwood Shores. It hasbeen exceptional in the numbers of Least Terns along the bayside in the county. On the 16th, ( 12 ) were foraging at the mouth of Colma Creek in South San Franciscoviewed from the end of Haskins Way. Some passerine migration has been evident with Ash-throated Flycatcher, Cedar Waxwing, Yellow Warbler, Wilson's Warblerand yesterday Leonie and I noted Western Tanagers.
Ron Thorn, Leonie Batkin


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Date: 8/17/26 4:11 pm
From: Joe Morlan via groups.io <jmorlan...>
Subject: [pen-bird] Royal Tern at San Gregorio State Beach.
Today I noticed an adult Royal Tern (Thalasseus maximus) at San Gregorio
State Beach. It was standing near but not with a small flock of Elegant
Terns just south of the creek mouth. Noticeably bigger and stockier with a
heavier less curved bill than nearby Elegant Terns.

Photos:

https://macaulaylibrary.org/catalog?taxonCode=royter1&subId=S384492957&view=grid&unconfirmed=incl
--
Joseph Morlan, Pacifica, CA


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