Date: 9/22/26 7:45 am
From: john tsortos via groups.io <jtsortos99...>
Subject: Re: [pen-bird] HALF MOON BAY State Beach - question
Hi everyone,

In addition to the lack of food present due to the ongoing marine heat
wave, domoic acid is also quite high right now in our waters. Recent tests
by CDFW in Monterey have shown levels in anchovy to be up to 60 times the
threshold for FDA action. There is currently a take restriction on anchovy
caught between Pigeon Pt. and Pt. Lobos.
<https://wildlife.ca.gov/News/Archive/commercial-and-recreational-take-restrictions-in-place-for-northern-anchovy-in-monterey-bay-due-to-public-health-hazard>
This
toxin comes from harmful algal blooms which are more severe in warm water.
While I haven't seen any data on the domoic acid levels in seabirds that
have been dying this year, this may be contributing. Marine mammals have
also been struggling with domoic acid poisoning recently.
<https://www.marinemammalcenter.org/news/an-update-on-domoic-acid-poisoning-on-the-california-coast>

John

On Mon, Sep 21, 2026 at 8:36 PM Kris via groups.io <grlbordr=
<yahoo.com...> wrote:

> Hi Karen,
>
> Murres do seem to be having an unusually rough time this month...
>
>
> https://www.birdrescue.org/uptick-in-starving-in-common-murres-raises-concern/?fbclid=IwY2xjawUevPlwZG9mBWV4dG4DYWVtAjEwAGJyaWQRMWljdFB1N0tRenpHWmZCMHpzcnRjBmFwcF9pZBAyMjIwMzkxNzg4MjAwODkyAAEeXCmXvZeB9XLUXpP6h394YrBNzEcLii8pIKUWcwEEMGNx57ZqCFpWgaa6esA_aem_Oz-EefnzVuYr4sm3XWXGeQ
>
> My best,
> Kris
>
> On Monday, September 21, 2026 at 05:47:15 PM PDT, Dominik Mosur via
> groups.io <dominikmosur...> wrote:
>
>
> Hi Karen,
>
> I’ve heard there is compelling evidence that this summer there may be a
> bigger die off of seabirds than usual of our coast. However based on my
> experience of walking ocean beach for many years finding dead birds
> including murres late summer/early fall is normal.
>
> Consider that there are several hundred thousand murres nesting on the
> Farallones. Some mortality is to be expected and at least a few of these
> will wash up.
>
> Dominik
>
>
>
> On Mon, Sep 21, 2026 at 17:35 Karen DeMello via groups.io <karen.demello=
> <gmail.com...> wrote:
>
> Peter's recent post inspired me to stop by Half Moon Bay State Beach just
> before noon today. It was a treat to see 5 Snowy Plovers on the beach.
>
> What was a surprise were the 5 dead Common Murres on the beach. Is this
> normal? It's rare that I get to the coast, though I don't remember ever
> seeing so many dead birds there before. Side note: If anyone is interested
> in dead bird photos let me know, I took several.
>
> Thanks,
> Karen DeMello
> Mountain View
>
> On Fri, Sep 18, 2026 at 2:29 PM Peter Metropulos via groups.io <pjmetrop=
> <pacbell.net...> wrote:
>
> This morning(September 18) I walked Half Moon Bay from Kelley Avenue north
> to Pilarcitos Creek.
> A PECTORAL SANDPIPER was feeding in the marshy estuary at the creek mouth
> along with a handful of other shorebirds.
> An AMERICAN AVOCET flying north along the beach was a much rarer bird
> along the coast than the Pectoral.
> I counted 28 SNOWY PLOVERS on the beach.
> Walking back to the parking lot I noticed a line of large,skinny,black
> birds flying low over the water,heading north. There were so many
> cormorants flying back and forth I imagined that's what they were but I
> gave them a look anyway. I'm glad I did look closely because the flock was
> of WHITE-FACED IBIS, about 20 birds in all.
>
> Peter J.Metropulos
>
>
>
>


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