Date   

B&W Warbler and Bar-Tailed Godwit both present 11/16

Alan Krakauer
 

First stop was for the Black and White Warbler reported near Alta Bates. I parked at Regent St x. Webster Street. and walked around the south end of the hospital. No luck. Walked back to my car, and the bird was working the low shrubs right next to the sidewalk 15 feet from my car at Regent St. x Webster Street, on the hospital side. 11:30AM

Bar-tailed Godwit was already staked out when I got to Emeryville. West of the Fire Station on the south side away from the marina, and just west of the large square yellow "Commercial Truck Turn-around" sign. Almost too close for me to use my scope. 12:15 PM

Finally got my .io account working again, so I want to thank Hugh Harvey for occasionally posting my sightings over the past few months.


Pt. Pinole shorebird survey

rosita94598
 

Today was the day picked by Point Blue to do the annual shorebird survey of San Francisco Bay.  I went with Susana de Trapaga to the west edge of Pt. Pinole, where we looked for shorebirds between 11:45 and 2:45.  We had a total of 10 Spotted Sandpipers along this stretch, a high for me doing this survey for the last 5-7 years.  I don't remember exactly when I started doing this area.
We also had 1 Greater Yellowlegs, 70 Willets, 1 Marbled Godwit, 3 Killdeer and 150 Least Sandpipers. 

Hugh B. HarveyWalnut Creek


Red Crossbills at Inspiration Point, 11/14

Judith Dunham
 

Six East Bay birders started the day in the Inspiration Point area around 8 a.m., first walking the EBMUD trail (permit required), then birding nearby Nimitz Way in Tilden. We had a roving flock of Red Crossbills moving high in the conifers, issuing their kip-kip-kip calls. The flock, upwards of 20, finally landed atop a conifer along Nimitz Way so we could have a good look.

In other news, we doubled-dipped--first on the Black-and-white Warbler near Alta Bates Hospital in Berkeley in late morning and then on the Bar-tailed Godwit in Emeryville around lunchtime. We left the latter area when it started to rain.

Judith Dunham
Berkeley


Crossbill irruption (forward MBBirds)

Ethan Monk
 

Not necessarily in the East Bay, but a good read and a reminder to record
any crossbills that might be cooperative enough to be recorded! Our current
irruption seems to be mostly type 2 but I wouldn't be surprised if type 3s
(or something rarer?) were mixed in.

Ethan

---------- Forwarded message ---------
From: Alex Rinkert <arinkert12@comcast.net>
Date: Wed, Nov 13, 2019 at 8:06 PM
Subject: [MBBIRDS] crossbill irruption
To: mbbirds <mbbirds@googlegroups.com>


The beginning of a RED CROSSBILL irruption seems to be underway. I’d like
to offer some initial observations on this irruption based on what has been
observed in Santa Cruz County recently.



While still early, this irruption seems to be on par with some of the
largest irruptions in the last decade. Reports are coming from both lowland
and montane areas where there is moderate to high birding coverage.
Crossbills have been found in areas with stands of Ponderosa or Monterey
pines, however there are a handful of reports from elsewhere, including at
places lacking conifer-dominant habitats (e.g., coastal Wilder Ranch,
Capitola Village). Crossbills in areas lacking sizeable stands of conifers
may blink out at some point in early winter.



Of the ten call types of Red Crossbill in North America, two are documented
to have occurred in Santa Cruz County—types 2 and 3. In recent irruptions
when numerous sound recordings were obtained, type 2s were locally present
on both the coast and mountains in areas with Ponderosa and Monterey pines.
Type 3s were widespread in the mountains and tended to be most abundant
where Doug-fir was the dominant tree species. In previous irruptions type
3s were also present at some areas on the immediate coast were there are
stands of Monterey cypress (e.g., Pajaro Dunes and vicinity). Both types
have been found elsewhere on the coast where conifers are sparse,
especially early in an irruption. Flocks containing multiple call types
have been found at a few locations.



So far the only crossbill type reported to eBird in this irruption has been
type 2. Notably, large flocks are missing at Quail Hollow Ranch and
Ponderosa Lodge at Mount Hermon where some of the largest stands of
Ponderosas are in the county. These areas served as strongholds in recent
irruptions for this call type. The large stand of Ponderosas at Bonny Doon
Ecological Reserve has had a flock, however they have thinned out there
recently. As far as I know there are no observations of them feeding on
Ponderosa cones in this irruption, and some observations at Bonny Doon
suggest they are actually feeding on the rare Santa Cruz cypress. Did our
Ponderosas not have a good cone crop this year?



Following up on a crossbill report from Empire Grade a few days ago, I came
across a large flock of type 2s voraciously feeding on Doug-fir cones in
mixed evergreen forest with patches of knobcone-manzanita. While such an
observation may not be unusual for this call type which feeds on a
diversity of conifer cones, in the recent irruptions I do not think type 2s
were ever noted feeding on Doug-firs. Instead, they were only seen feeding
on the much larger Ponderosa cones (preferred across their range), willow
catkins, and presumably Monterey pine. Recently the flock of type 2s at
Sunset State Beach were seen feeding on Monterey pine cones.



Most excitingly in this recent type 2 flock on Empire Grade were two type 4
crossbills, which I believe are the first documented in the county. A sound
recording can be listened to here:
https://macaulaylibrary.org/asset/187559641. Type 4s are known from this
region, however there are few records. Groth reports in his 1993 monograph
that this call type was part of the 1984-85 irruption in the San Francisco
Bay. More recently in 2013 one was recorded in the Diablo Range in Santa
Clara County.



I highly encourage birders to attempt recording the calls of crossbills
they encounter. With practice the different call types are recognizable in
the field however they sound similar enough to cause confusion, and with
the possibility of multiple types in a single flock, sound recordings are
important for correctly identifying them. A few years ago eBird published
an overview of call types that is worth reading:
https://ebird.org/news/crossbills-of-north-america-species-and-red-crossbill-call-types/.
Birders would also do well to note what tree species they are seen foraging
on to help further elucidate their ecology in this region.



Happy crossbill hunting,



Alex Rinkert

Santa Cruz


Prairie Merlin, San Ramon

Ethan Monk
 

A quick note that this evening a Prairie Merlin flew over Canyon Lakes Golf Course in San Ramon. This is my first in Contra Costa and is surprisingly not flagged. The powder blue back and orange streaking offset against a clean, white breast were giveaways. Probably one of the coolest raptor experiences that I've had in the county. I don't know if you are allowed to bird on the golf course, so I normally don't carry my camera, thus no photos. Hopefully the bird will overwinter locally. Also, the few Slate-col. Fox Sparrows that winter at this site have not returned yet.

Good birding,
Ethan


Snow Geese, Harbor Porpoise

John Luther
 

Hi All,
Yesterday Nov 12 Leora Feeney and I observed from the west corner of Alameda 10 Snow Geese flying northwest towards Yerba Buena Island.  The geese were over SF county waters.  Also for the first time for Leora and I we saw from Alameda (although they were in SF county waters) 6 adult and 2 young (about half size of adults) Harbor Porpoise in the same area.   
John LutherOakland


Lewis's woodpeckers, Round Valley Regional Preserve

Jerry Britten
 

8 of these guys were actively foraging towards the upper end of the valley
yesterday. Also saw a Townsend's warbler. Ebird checklist with photos
below.

Jerry Britten, Morgan Territory

https://ebird.org/checklist/S61402899


Bar-tailed Godwit still at Emeryville 11/12

EBB-Support <EBB-Support@...>
 
Edited

Thanks to Clay Anderson spotting it, Elizabeth and I got to see this bird which has now been here since October 31, essentially in the same location on the rocks south of the Marina office and west of the fire and police stations. Once found, the differences from a Marbled in size, coloration, and distinctive field marks are unmistakeable! It was a pleasure to show it to a later arrival and then to see that birder in turn point it out to yet another.

Dal Leite


Tilden Park Gray-crowned Rosy-Finch not found today

David Quady and Nancy Boas
 

Birders:

Between Teale Friscoe and myself, the spot at which Horacio and Mona Mena found a Gray-crowned Rosy-Finch yesterday afternoon was monitored from shortly after 7:00 am until 11:00 am today …. without success.

Yesterday afternoon’s bird was found at 37 deg 53’ 32.3” N, 122 deg 13’ 51.6” W, very near a bench that honors Robert H. Blau . When Teale arrived this morning he took over monitoring that location while I moved north along the Seaview Trail about 300 m to a location that provided two benches, a picnic table, and what appeared to be micro-habitat similar to the discovery site: a local high point along the trail, with few trees blocking views to the east and west of the trail, and a broad swath of trail that lacks vegetation: perfect for a Rosy-Finch to forage on.

Looked good to me, but neither location held a Rosy-Finch.

Oh, well …..

Dave Quady
Berkeley, California
davequady@att.net


Re: Black and White Warbler Continuing

Ralph Pericoli
 

Correction: the Black-and-white Warbler was seen in the tot-lot at Regent & Webster.

Ralph Pericoli

On Nov 12, 2019, at 2:08 PM, Ralph Pericoli <ralphpericoli@att.net> wrote:

Saw the Black-and-white Warbler @ 1:55 pm in the Magnolia trees of the little parklet. It was making rapid chit calls and moving amongst the Magnolias. Two other birders present and witnessed this.

Good Birding,
Ralph Pericoli
On Nov 12, 2019, at 12:25 PM, Sharon Jue <sljue1@gmail.com> wrote:

Still present 12:15 11/12 at the little parklet at Bateman and Webster.
Much more active and harder to track.

On Mon, Nov 11, 2019, 10:07 AM Linda T <shama.aria@gmail.com> wrote:

Just updating that several of us saw the Black-and-White Warbler again
this morning about 9:30 am in the two minimally leafed trees south of 2999
Regent where it dead ends in a turnabout. When last seen the bird was
flying south to another group of trees. Thanks again to Sharon Jue for the
tip. Wonderful bird.







Re: Black and White Warbler Continuing

Ralph Pericoli
 

Saw the Black-and-white Warbler @ 1:55 pm in the Magnolia trees of the little parklet. It was making rapid chit calls and moving amongst the Magnolias. Two other birders present and witnessed this.

Good Birding,
Ralph Pericoli

On Nov 12, 2019, at 12:25 PM, Sharon Jue <sljue1@gmail.com> wrote:

Still present 12:15 11/12 at the little parklet at Bateman and Webster.
Much more active and harder to track.

On Mon, Nov 11, 2019, 10:07 AM Linda T <shama.aria@gmail.com> wrote:

Just updating that several of us saw the Black-and-White Warbler again
this morning about 9:30 am in the two minimally leafed trees south of 2999
Regent where it dead ends in a turnabout. When last seen the bird was
flying south to another group of trees. Thanks again to Sharon Jue for the
tip. Wonderful bird.





Re: Black and White Warbler Continuing

Sharon Jue
 

Still present 12:15 11/12 at the little parklet at Bateman and Webster.
Much more active and harder to track.

On Mon, Nov 11, 2019, 10:07 AM Linda T <shama.aria@gmail.com> wrote:

Just updating that several of us saw the Black-and-White Warbler again
this morning about 9:30 am in the two minimally leafed trees south of 2999
Regent where it dead ends in a turnabout. When last seen the bird was
flying south to another group of trees. Thanks again to Sharon Jue for the
tip. Wonderful bird.




Bar-tailed Godwit continues at Emeryville Marina.

Len Blumin
 

Helpful birders got us on this cooperative juvenile Bar-tailed Godwit near the Emeryville Marina. South side of Powell St, just west of Watergate apartments.
Bird roosting with hundreds of Marbled Godwits, Willets and others.
Details and photos at: https://ebird.org/checklist/S61385876


Re: Great Horned Owl vocalization question

Bill Bousman
 

Dear Steve and Carol,

I think the shriek sound is similar to a begging call given by a juvenile bird, but at this time of year might not be expected (although I have heard typical Great Horned begging calls occasionally in the winter.)  I've been watching adult Red-tails harassing juvenile bird over the last two months, which is the natural way to force the youngsters out of the adult's territory. So, two guesses: (1) it is last year's juvenile using the begging call to elicit tolerance from the parent, or (2) it is a female being submissive to a male by using childlike sounds.  I've noticed many passerines using begging postures (wing fluttering) both as begging youngsters and as courting adults.  But this is speculative on my part.

Bill Bousman
Menlo Park

On 11/11/2019 8:59 PM, SteveLombardi wrote:
https://www.xeno-canto.org/506643
We recorded these two birds in our backyard in San Ramon tonight about 6:30 pm (total darkness with moon rising).
One bird is obviously an adult Great Horned Owl.
But what's the other one shrieking?
Based on the fact that both birds were vocalizing in the dark and relatively near each other, we presume that it's another GHOW.
But we've never heard this vocalization, nor do we find much in the literature about it.
Any thoughts or opinions welcome.

Thanks,
Steve and Carol
San Ramon



Great Horned Owl vocalization question

SteveLombardi
 

https://www.xeno-canto.org/506643
We recorded these two birds in our backyard in San Ramon tonight about 6:30 pm (total darkness with moon rising).
One bird is obviously an adult Great Horned Owl.
But what's the other one shrieking?
Based on the fact that both birds were vocalizing in the dark and relatively near each other, we presume that it's another GHOW.
But we've never heard this vocalization, nor do we find much in the literature about it.
Any thoughts or opinions welcome.

Thanks,
Steve and Carol
San Ramon


Re: Cassin's Finch at Tilden Botanical Gardens

Alvaro Jaramillo
 

Lee et al.
That does look like a Cassin's Finch. Very good find. Note first that the co-finder of the rosy finch is Horacio Mena, not Hortacio. But also note that the Rosy Finch is a "Hepburn's" Rosy Finch from much farther north, not a Sierra bird. You can identify it by the extensive gray on the face. This bird has come from the north, not from the East. The arrival of the Rosy Finch and Cassin's Finch may have no correlation at all.
Regards
Alvaro

Alvaro Jaramillo
alvaro@alvarosadventures.com
www.alvarosadventures.com

-----Original Message-----
From: EBB-Sightings@groups.io <EBB-Sightings@groups.io> On Behalf Of Lee Friedman
Sent: Monday, November 11, 2019 6:11 PM
To: EBB-Sightings@groups.io
Subject: [EBB-Sightings] Cassin's Finch at Tilden Botanical Gardens

Birders,

This morning at approximately 10:30AM, I saw what I believe to be a Cassin’s Finch at the Tilden Botanical Gardens. It was sitting on a tree top near the center of the Garden. It had the distinctly red crown much brighter than any other part, pink wash on throat and upper breast, whitish lower breast and belly with barely detectable streak marks, notched tail. This species is known to mix with other montane finches like the Red Crossbills and Pine Siskin reported here yesterday by Erica Rutherford and John Colbert. I don’t think it’s an accident that today Dave Quady reported a sighting (by Mona and Hortacio Mena) of another mountain bird the Gray-crowned Rosy-Finch on Tilden’s Seaview Trail. Something is pushing these birds our way this year. A photo for id purposes of the Cassin’s Finch is attached to my eBird report:


https://ebird.org/checklist/S61378729

Good birding,

Lee Friedman


Cassin's Finch at Tilden Botanical Gardens

Lee Friedman
 

Birders,

This morning at approximately 10:30AM, I saw what I believe to be a Cassin’s Finch at the Tilden Botanical Gardens. It was sitting on a tree top near the center of the Garden. It had the distinctly red crown much brighter than any other part, pink wash on throat and upper breast, whitish lower breast and belly with barely detectable streak marks, notched tail. This species is known to mix with other montane finches like the Red Crossbills and Pine Siskin reported here yesterday by Erica Rutherford and John Colbert. I don’t think it’s an accident that today Dave Quady reported a sighting (by Mona and Hortacio Mena) of another mountain bird the Gray-crowned Rosy-Finch on Tilden’s Seaview Trail. Something is pushing these birds our way this year. A photo for id purposes of the Cassin’s Finch is attached to my eBird report:


https://ebird.org/checklist/S61378729

Good birding,

Lee Friedman


Gray-crowned Rosy-Finch in Tilden Regional Park, 11 November 2019

David Quady and Nancy Boas
 

Birders:

About 3:30 this afternoon Mona and Hortacio Mena found and photographed a Gray-crowned Rosy-Finch in Contra Costa County. It was in Tilden Regional Park, on the Seaview Trail, near the Upper Big Springs Trail, at these coordinates: 37 deg 53’ 32.3” N, 122 deg 13’ 51.6” W.

They added, "It was on the trail foraging for a good 5 minutes, until it got flushed out by folks. We were able to get pretty close to the bird.”

Here is a cropped version of their photograph:




What a find!!

Serving as the messenger ….


Dave Quady
Berkeley, California
davequady@att.net <mailto:davequady@att.net>


Cackling Goose, Oak Hill Park, Danville

photohutch
 

Hi Birders,

As of 3pm, there is a single Cackling Goose mixed in with the Canada Geese on the pond at Oak Hill Park in Danville. Haven't seen one in few years, and always surprised at how tiny they are compared to the big guys.

Happy birding!

Steve Hutchcraft
Alamo, CA


Bar-tailed Godwit Nov 11

Dave Weber
 

BTG on rocks across from Emory Cove Marina south of the Commercial Truck Turnaround sign. Nov 11, 11:45 amDave Weber,MilpitasBy phone

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