Date   
Harris Sparrow, Tropical KB Mar 18

Dave Weber
 

Visited Castle Rock Rec Area and Heather Farms today. Met up with Don Pendleton at Castle Rock. At least 50 Golden-crowned Sparrows were at the north end of the baseball field near the pool restrooms but no Harris’s. While Don went back to his car (someone has to leave!) I found the Harris’s Sparrow skulking in dense undergrowth behind the fence in the Caste Trees Picnic area at 1 pm. Don returned and was able to see it. We then went to Heather Farms for the Tropical Kingbird which has been absent on my last several attempts. We saw it while we were walking on the west side. It was on the east side flying between trees north of the observation deck.

 

Dave Weber,

Milpitas

Dumbarton Pier (5MR effort)

Matthew Dodder
 

Eric Goodill and I explored the Dumbarton Pier today, an area neither one of us had been to before, mostly because a small sliver of the levy trail falls within Eric's "5-mile-radius", and we wanted to check it out. We found 37 species during our short visit, including 2 PELAGIC CORMORANTS on the old rail bridge, as well as two PEREGRINE FALCONS (perhaps nesting one of the old buildings over the water). The only other raptor ecnountered was an OSPREY flying over the water. BARN SWALLOWS showed up near the lot, as well as a single TREE SWALLOW. There were great numbers of CLARK’S and WESTERN GREBES, a single RED-THROATED LOON and a number of unsurprising birds.

There were dozens of PAINTED LADIES in the area, most on the move, but occasionally one would stop and rest, allowing us to admire them briefly.

Registration for Spring Birding Classes is now open at the Palo Alto Adult School:
https://paadultschool.org/class/birding-nature/

Matthew Dodder
Mountain View

UC Berkeley Peregrine Falcons

Anne Krysiak
 

The Peregrine Family nesting on the Campanile has laid it's first egg of 2019.
You can watch the nestcam at https://www.youtube.com/watch?v=EaJuC-rxVAQ.
The outside camera is here: https://www.youtube.com/watch?v=S5BofDM7eAQ

Koster Rd. pond and Recology CLOSED to birding

Noah Arthur
 

This is a little out of our area, but I can’t seem get it to post on CV Birds and it’ll be of interest to East Bay birders as well...
On my visit to the Koster Rd. gravel pit pond in Tracy today, I was informed by a workman that the gravel pit is private property and trespassing is not permitted. 
Also, I stopped by the canal at the Recology facility where gulls sometimes congregate, and found that No Trespassing signage has now been installed. 
Noah ArthurOakland, CA

Harris's Sparrow still in Walnut Creek

fgsafier
 

Thanks to Marty Lycan, who pointed me toward the correct flock of Golden-crowned Sparrows, I was able to see this rarity that was first reported by Tracy Farrington. This was at 10 AM between showers, in Castle Rock Park.

Fred Safier

Re: UC Berkeley Peregrine Falcons

Carolyn Arnold
 

Thank you Anne! The second egg appeared sometime this morning, I think just before 8 am!
The cam lets you go back up to 4 hours, and you can see the eggs at 8:00, 9:41, and 10:48, and 11:18.
It looks like dad came in soon after the egg was laid, and relieved mom for an hour to go feed.
Since then, it’s been mom sitting…

With a 29-33 incubation period, that means hatching sometime starting the week of April 15th..


On Mar 19, 2019, at 5:33 PM, Anne Krysiak <vakrysiak@...> wrote:

The Peregrine Family nesting on the Campanile has laid it's first egg of 2019.
You can watch the nestcam at https://www.youtube.com/watch?v=EaJuC-rxVAQ.
The outside camera is here: https://www.youtube.com/watch?v=S5BofDM7eAQ


Carolyn Arnold
(510) 590-1172 (cell)

Mute Swan, McNabney Marsh

photohutch
 

Birders,

While I was driving north on 680 yesterday, I notice several large white birds hanging out in McNabney Marsh. Most were the relatively common American White Pelicans, but one bird was by itself. As I sped past, I clearly noticed upswept wings and a black knob on it's bill. Clearly not a pelican, and definitely a Mute Swan. Quite surprising, so I checked on eBird. Apparently it's been there since at least Saturday. One was reported at Shollenberger on Saturday, as well. Didn't realize they are beginning to hang out in our area.

Happy birding!

Steve Hutchcraft
Alamo, CA

Re: UC Berkeley Peregrine Falcons - eggs warm enough?

Carolyn Arnold
 

Is anyone else watching these falcons? Would you like to have a discussion about what we see?

Right now, I”m wondering if the eggs are being kept warm enough, since both parents have left the eggs for up to an hour or so alone, even on these cold nights.
I thought that the eggs needed to be kept warm all the time to incubate.

Also, peregrines usually have 3 eggs, laid 48 hours apart. That is about now, so I’m watching!

Happy birding, or watching cams,
Carolyn in Oakland

On Mar 20, 2019, at 11:38 AM, Carolyn Arnold <carnold@...> wrote:

Thank you Anne! The second egg appeared sometime this morning, I think just before 8 am!
The cam lets you go back up to 4 hours, and you can see the eggs at 8:00, 9:41, and 10:48, and 11:18.
It looks like dad came in soon after the egg was laid, and relieved mom for an hour to go feed.
Since then, it’s been mom sitting…

With a 29-33 incubation period, that means hatching sometime starting the week of April 15th..


On Mar 19, 2019, at 5:33 PM, Anne Krysiak <vakrysiak@...> wrote:

The Peregrine Family nesting on the Campanile has laid it's first egg of 2019.
You can watch the nestcam at https://www.youtube.com/watch?v=EaJuC-rxVAQ.
The outside camera is here: https://www.youtube.com/watch?v=S5BofDM7eAQ


Re: UC Berkeley Peregrine Falcons - eggs warm enough?

Melani King
 

Carolyn,

On the Facebook page for the Cal Falcons one of the posts has this:

'Falcons, like most birds will wait until they have a full clutch of eggs before they start to incubate. This ensures that all the eggs develop at the same rate and hatch at roughly the same time.'

-Melani King
Pt. Richmond

On 3/21/19 1:42 PM, Carolyn Arnold wrote:
Is anyone else watching these falcons? Would you like to have a discussion about what we see?

Right now, I”m wondering if the eggs are being kept warm enough, since both parents have left the eggs for up to an hour or so alone, even on these cold nights.
I thought that the eggs needed to be kept warm all the time to incubate.

Also, peregrines usually have 3 eggs, laid 48 hours apart. That is about now, so I’m watching!

Happy birding, or watching cams,
Carolyn in Oakland


On Mar 20, 2019, at 11:38 AM, Carolyn Arnold <carnold@...> wrote:

Thank you Anne! The second egg appeared sometime this morning, I think just before 8 am!
The cam lets you go back up to 4 hours, and you can see the eggs at 8:00, 9:41, and 10:48, and 11:18.
It looks like dad came in soon after the egg was laid, and relieved mom for an hour to go feed.
Since then, it’s been mom sitting…

With a 29-33 incubation period, that means hatching sometime starting the week of April 15th..


On Mar 19, 2019, at 5:33 PM, Anne Krysiak <vakrysiak@...> wrote:

The Peregrine Family nesting on the Campanile has laid it's first egg of 2019.
You can watch the nestcam at https://www.youtube.com/watch?v=EaJuC-rxVAQ.
The outside camera is here: https://www.youtube.com/watch?v=S5BofDM7eAQ





The Nutall's are taking their time Oakland Laurel

Marcus
 

Past two days have heard the Nutall's call or pounding on the tree in front of my house. Today a female Nutall's was back to inspect the tree and peck around.   Everything seems to be running later this season. This time last year the nest was basically dug out and the female was inspecting and doing some of her own nest excavation.

Marcus Pun
Video Editor / Producer/Editor / Camera
C: 510-384-8085 | H: 510-530-2507
Oakland, CA

Peregrine incubating Thursday 3.21.19 pm

Alan Kaplan
 

Friends!
I returned from the GGAS talk by Alan Fish on the falcons and looked at WebCam 1.
Annie the female was near the eggs and then covered them for incubation. This was at 2133hrs, Thursday 3,21.19. A great big Thank You to everyone working on these WebCams at the Campanile.
Best of Boids!
Alan Kaplan

Re: Peregrine incubating Thursday 3.21.19 pm

Lorrie Klosterman
 

Hi folks,
I've wondered how the peregrines nesting in UC Berkeley's campanile can
tolerate the tremendous "gong" of the bells as they chime out the top of
the hour daily from 8 a.m. to 10 p.m. Do they fly out each time?
Because I live a few blocks from campus -- within ear-shot of the bells --
I watched the nest videocam when I heard the bells from my apartment. To my
disbelief, the bird on the nest had absolutely no reaction. But then, just
as the chimes stopped, the bird shook its head, several times in a row, in
a rhythmic fashion -- which is when I realized that the gongs were going
off *on the videocam* (barely audible). So there is a slight delay between
real time (my apartment) and what we view on the videocam. Knowing that, I
watched again on the next hour, and listened for the gongs on the videocam.
Sure enough, again the bird shook its head in rhythm with the gongs. It
also sometimes opened its beak very wide, or looked as though it was going
to regurgitate. All of those behaviors seem to me evidence that the bird is
having a physical reaction to the sound. Because its hearing system (like
ours) includes narrow tubes which connect the middle ear to its throat, the
beak/throat movements might be the peregrine's equivalent of our attempts
to "clear our ears" with a change in air pressure. Well, at least it didn't
fly away, which is what I was expecting. What, I wonder, will happen during
the long Sunday afternoon serenade?
Update -- this just in! While writing this, the 11 a.m. bells went off and
the nesting bird had no head reactions this time. I don't know if it's the
same bird as yesterday (do males and females take turns incubating?) This
bird's tail, however, was slightly pumping -- hmm, is this the female
laying another egg?

--Lorrie K.

On Fri, Mar 22, 2019, 8:09 AM Alan Kaplan <LNKPLN67@...> wrote:

Friends!
I returned from the GGAS talk by Alan Fish on the falcons and looked at
WebCam 1.
Annie the female was near the eggs and then covered them for incubation.
This was at 2133hrs, Thursday 3,21.19. A great big Thank You to everyone
working on these WebCams at the Campanile.
Best of Boids!
Alan Kaplan



3rd egg arrived at UC Berkeley Peregrine Falcon nest

Lee Friedman
 

Earlier this morning on the UC Berkeley Peregrine Falcon nest, there were only two eggs. But at 11:38AM I saw clearly a third egg, just as Alan Fish correctly predicted last night at the GGAS talk.

Nest cam is here: https://www.youtube.com/watch?v=EaJuC-rxVAQ


Good birding,

Lee Friedman

Re: Peregrine incubating Thursday 3.21.19 pm

Alan Kaplan
 

Hi, Lorrie
Thanks for writing.
You ask a question the audience at the talk on Thursday evening had, too.
Alan from GGRO said they don’t notice the bells! Behavior doesn’t change noticeably.

For the human effects, on the other hand,
read The Nine Tailors by Dorothy Sayers, a Lord Peter Wimsey novel that resurrected the almost lost art (or at least increased the appreciation) of “ringing the changes” on carillons.

On Mar 22, 2019, at 11:31 AM, Lorrie Klosterman <loklosterman@...> wrote:

Hi folks,
I've wondered how the peregrines nesting in UC Berkeley's campanile can tolerate the tremendous "gong" of the bells as they chime out the top of the hour daily from 8 a.m. to 10 p.m. Do they fly out each time?
Because I live a few blocks from campus -- within ear-shot of the bells -- I watched the nest videocam when I heard the bells from my apartment. To my disbelief, the bird on the nest had absolutely no reaction. But then, just as the chimes stopped, the bird shook its head, several times in a row, in a rhythmic fashion -- which is when I realized that the gongs were going off on the videocam (barely audible). So there is a slight delay between real time (my apartment) and what we view on the videocam. Knowing that, I watched again on the next hour, and listened for the gongs on the videocam. Sure enough, again the bird shook its head in rhythm with the gongs. It also sometimes opened its beak very wide, or looked as though it was going to regurgitate. All of those behaviors seem to me evidence that the bird is having a physical reaction to the sound. Because its hearing system (like ours) includes narrow tubes which connect the middle ear to its throat, the beak/throat movements might be the peregrine's equivalent of our attempts to "clear our ears" with a change in air pressure. Well, at least it didn't fly away, which is what I was expecting. What, I wonder, will happen during the long Sunday afternoon serenade?
Update -- this just in! While writing this, the 11 a.m. bells went off and the nesting bird had no head reactions this time. I don't know if it's the same bird as yesterday (do males and females take turns incubating?) This bird's tail, however, was slightly pumping -- hmm, is this the female laying another egg?

--Lorrie K.

On Fri, Mar 22, 2019, 8:09 AM Alan Kaplan <LNKPLN67@...> wrote:
Friends!
I returned from the GGAS talk by Alan Fish on the falcons and looked at WebCam 1.
Annie the female was near the eggs and then covered them for incubation. This was at 2133hrs, Thursday 3,21.19. A great big Thank You to everyone working on these WebCams at the Campanile.
Best of Boids!
Alan Kaplan


Re: Peregrine incubating Thursday 3.21.19 pm

Peter Rauch
 

Lorrie, Maybe their reaction to the bell-ringing that you've observed is
because they partially deaf now?

Alan,
What, if any, was the basis that GGAS Alan offered for his comment that the
birds don't notice?
(I suppose one might conclude that for the purposes of selecting and
establishing a nest and brood, the bell-ringing didn't make them "notice"
enough to reject the site.)

Peter

On Fri, Mar 22, 2019 at 2:03 PM Alan Kaplan <LNKPLN67@...> wrote:

Hi, Lorrie
Thanks for writing.
You ask a question the audience at the talk on Thursday evening had, too.
Alan from GGRO said they don’t notice the bells! Behavior doesn’t change
noticeably.

For the human effects, on the other hand,
read The Nine Tailors by Dorothy Sayers, a Lord Peter Wimsey novel that
resurrected the almost lost art (or at least increased the appreciation) of
“ringing the changes” on carillons.

On Mar 22, 2019, at 11:31 AM, Lorrie Klosterman <loklosterman@...>
wrote:

Hi folks,
I've wondered how the peregrines nesting in UC Berkeley's campanile can
tolerate the tremendous "gong" of the bells as they chime out the top of
the hour daily from 8 a.m. to 10 p.m. Do they fly out each time?
Because I live a few blocks from campus -- within ear-shot of the bells
-- I watched the nest videocam when I heard the bells from my apartment. To
my disbelief, the bird on the nest had absolutely no reaction. But then,
just as the chimes stopped, the bird shook its head, several times in a
row, in a rhythmic fashion -- which is when I realized that the gongs were
going off on the videocam (barely audible). So there is a slight delay
between real time (my apartment) and what we view on the videocam. Knowing
that, I watched again on the next hour, and listened for the gongs on the
videocam. Sure enough, again the bird shook its head in rhythm with the
gongs. It also sometimes opened its beak very wide, or looked as though it
was going to regurgitate. All of those behaviors seem to me evidence that
the bird is having a physical reaction to the sound. Because its hearing
system (like ours) includes narrow tubes which connect the middle ear to
its throat, the beak/throat movements might be the peregrine's equivalent
of our attempts to "clear our ears" with a change in air pressure. Well, at
least it didn't fly away, which is what I was expecting. What, I wonder,
will happen during the long Sunday afternoon serenade?
Update -- this just in! While writing this, the 11 a.m. bells went off
and the nesting bird had no head reactions this time. I don't know if it's
the same bird as yesterday (do males and females take turns incubating?)
This bird's tail, however, was slightly pumping -- hmm, is this the female
laying another egg?

--Lorrie K.

On Fri, Mar 22, 2019, 8:09 AM Alan Kaplan <LNKPLN67@...> wrote:
Friends!
I returned from the GGAS talk by Alan Fish on the falcons and looked at
WebCam 1.
Annie the female was near the eggs and then covered them for
incubation. This was at 2133hrs, Thursday 3,21.19. A great big Thank You to
everyone working on these WebCams at the Campanile.
Best of Boids!
Alan Kaplan




Harris's Sparrow continues, Castle Rock Regional Recreation Area, Walnut Creek

tracy_farrington
 

At 8:30, this morning, I found the HARRIS'S SPARROW on the mowed lawn south of the red barn, which
is at the south end of the grassy ball field. As before, it was among 20+ Golden-crowned Sparrows. A bit
later, I was joined by Kai Mills and Erica Kawata, and together, we had good looks at this continuing
bird.
Just about Spring, folks!
Good birding,
Tracy Farrington
Walnut Creek

Re: Harris's Sparrow continues, Castle Rock Regional Recreation Area, Walnut Creek

John Sterling
 

Just found the sparrow in the one lone horseshoe pit on the south side of the ball field by the picnic tables.
John Sterling
530 908-3836
26 Palm Ave
Woodland, CA 95695

On Mar 23, 2019, at 11:02 AM, tracy_farrington via Groups.Io <tracy_farrington=yahoo.com@groups.io> wrote:

At 8:30, this morning, I found the HARRIS'S SPARROW on the mowed lawn south of the red barn, which
is at the south end of the grassy ball field. As before, it was among 20+ Golden-crowned Sparrows. A bit
later, I was joined by Kai Mills and Erica Kawata, and together, we had good looks at this continuing
bird.
Just about Spring, folks!
Good birding,
Tracy Farrington
Walnut Creek


White-throated Sparrow at Briones Reservoir

Daniel Fitzgerald
 

I was out testing a new lens and happened to capture this White-throated Sparrow along Bear Creek Road in the EBMUD property.  https://www.flickr.com/photos/156457454@N02/33576073518/in/dateposted-public/Dan Fitzgerald

White-throated Sparrow (2nd Attempt)

Daniel Fitzgerald
 

I was out testing a new lens and happened to capture this White-throated Sparrow along Bear Creek Road in the EBMUD property.  Zonotrichia albicollis

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White-throated Sparrow
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Dan Fitzgerald

Cassin's Vireo - Creekside Park 3-23-19

hoggsville
 

A Cassin's Vireo was present on the Alameda county side of El Cerrito Creek foraging in the willows with an assortment of warblers, tits, chickadees and goldfinches. This was only the second sighting of Cassin's I've had at that park. FOS Wilson's warbler was present.

You can view pictures here: https://ebird.org/view/checklist/S54153529

Thanks,
Jack Hayden
Albany