Date   
Re: Elegant/Royal Tern Crissy Field

Jonah Benningfield
 

The thing just flew off into the Bay. Maybe it’ll come back, but who knows. Really did look better for Elegant to my eye.

best,
Jonah

On Jan 22, 2019, at 3:06 PM, Jonah Benningfield <@J🅱️> wrote:

Hey birders,
There’s an Elegant/Royal Tern at Crissy Field, on the mudflat by the bridge (east end). Marks look a little better for Elegant to me, but on this date Royal would be more expected. Got some digibins, and I’ll try to get more, but I figure I should get the word out.

good birding,
Jonah B.

Interesting Fox Sparrow at Fort Mason

Richard Bradus
 

Hi all

Spent a beautiful late morning at the Fort Mason Community Garden, where the immature male Orchard Oriole made a couple of appearances (at one point, surprisingly, following closely behind a foraging Nuttal's Woodpecker) and I had great looks at a Lincoln's Sparrow that finally popped up from the central garden beds (thanks David for telling me where to search for it). Still, and you may have to excuse my ignorance, but it was an unusual Fox Sparrow that most intrigued me.

Firstly, unlike our typical Sooty types, I saw this one not on the ground but perched in a small, mostly bare tree along the west side. It had a distinctly whitish breast, with well spaced rows of small blackish spots, and a gray beak. I didn't see the back well, but it appeared to be grayish as well. Looking at my references after I returned home, it most closely matches the Thick-billed (California) drawing in Sibley (though I must profess that I'm not certain that the beak was "massive" as Sibley shows so, despite the gray bill color and lack of confluent spots it could have been a Slate colored I suppose).

Anyway, just another reason to really look at all of the birds we encounter, as even the common species can be surprising and fascinating.

Richard Bradus
San Francisco

Recent misc.

 

Between rain showers Sunday (1/20) I connected with the wintering Blackburnian and Wilson's Warblers at Lake Merced.

The Blackburnian was in the albizia bush right next to the metal gate post for Harding Rd. at Skyline Blvd. It was foraging slowly and deliberately in the interior of the bush and I would have probably missed it had I not clued into its soft call notes.

The Wilson's Warbler continued at the east end of the defunct Pacific Rod and Gun Club on John Muir Drive.

The last two visits earlier this week I've noted a Bewick's Wren (very rare in winter in Golden Gate Park) in the shrubby areas around Metson Lake and above the restrooms next to the Polo Fields. A Spotted Towhee was present one of the days as well, also a notable species in winter for GGP.

Today (1/24/19) at noon a lone White-throated Swift flew over Corona Hill heading west.

Dominik Mosur
San Francisco

Recent Battery Godfrey sightings, Jan. 25 & 27, etc.

Paul Saraceni
 

With recent NE winds, I did a skywatch from Battery Godfrey early morning Friday, 1/25, to see if anything was moving. The flight was minimal, but there were a few species of local interest:


Cackling Goose 24 (1 high-flying flock of "Aleutians" heading NE)

BRANT 2 (on the water in the GG Channel, then flew SW in the direction of Mile Rock)

Am. Wigeon 7 (flying w/N. Pintail flock)

N. Pintail 17 (flying flocks of 10 & 7)

Loons (most flying high over GG Channel / Headlands heading E):

Common 2

Pacific 2

Red-thr. 40+

Peregrine Falcon 2 (perched together atop S tower of GG Bridge)


This morning (1/27), Hugh C., Sam S., and I tried again from BG for a few hours in cold NE winds.  The only waterfowl moving were multiple small groups of Surf Scoters.  The 2 Peregrine Falcons were again present on the Bridge and flying over the Battery.  Two flocks of Band-tailed Pigeons totaling 80+ crossed the Bay and headed S over the Presidio. The most interesting sighting was an early group of 4 VIOLET-GREEN SWALLOWS heading N over the Battery.


Other recent sightings: my first observation of N. Pintail for the year was a group of 7 m. flying N over the ocean (viewed from the terminus of Pacheco) on 1/21.  That morning I also observed 3 BLACK SCOTERS (2 m. & 1 f.) at the usual location off the S end of the Great Highway.  Numbers of that species have been unusually low this winter at that traditional wintering location -- in past winters there has typically been a flock of ~20.


Paul Saraceni

San Francisco



Eastern phoebe 17th ave and lobos creek

Josiah Clark
 

Just a quick note to say I had an Eastern Phoebe at the end of 17th Ave. off of Lake Street this morning while walking the dog. It was in the willows among lots of robins and other activity. This is the headwaters of Lobo’s Creek.

Wilson’s Warbler at Sue Bierman Park

David Assmann
 

A WILSON’S WARBLER is high up in a Poplar tree near the center of Sue Bierman Park - presumably the same Bird seen by Mike Carozza in December. There was also at least one WHITE-THROATED SPARROW.

Sutro & L Merced

Brian Fitch
 

Two female Common Goldeneye's were swimming south of the concrete bridge this morning at South Lake Merced, an unusual site for this species.  Singles of Virginia Rail and Sora were visible in the reeds at the NE end of the bridge, and approximately 15 Great-tailed Grackles lifted up out of the reeds around 7:30 and headed off to shop at Westlake.

Last Thursday, three Red Phalaropes flew by the terrace at the Sutro Baths, while six Marbled Murrelets flew into the Gate at differing intervals.  There were over 200 Red-throated Loons, many on the ocean, and many more flying north.

Brian Fitch

American Bittern

David Assmann
 

The AMERICAN BITTERN continues at North Lake, still in the same spot.  A GREATER WHITE-FRONTED GOOSE was in with the CANADA GEESE on the Polo Fields in Golden Gate Park.

early breeding behavior

 

On 1/30/19 a female ALLEN'S Hummingbird was constructing a nest inside the fence of the reservoir at the Menzies "California" section of the Arboretum/Golden Gate Park. Off top of my head this is the earliest nest building I can recall by Allen's Hummingbird in recent years with a mid-February being the next earliest on Corona Hill some years back. The nest was being built in a blackberry bush.

This morning (2/1) while heading into work I observed a pair of BAND-TAILED Pigeons engaged in stiff winged courtship flights and chasing over the intersection of Clarendon and Laguna Honda. This species has yet to be "confirmed" with physical evidence of nesting in San Francisco but this is the second consecutive winter I've observed Band-tails engaged in this behavior at this site.

Dominik Mosur
San Francisco

post storm Pelagic

Alvaro Jaramillo
 

Hello folks

    The oncoming storm made us shift our sold out pelagic from Saturday to Sunday. This change has opened up some spots. The winds will be dying down Saturday night, and weather will be calming throughout the day on Sunday. We plan to scour the inshore areas early on in the day looking for alcids and Black-legged Kittiwake, and then head out farther offshore to see if we can find albatross. This time of year is excellent for Laysan Albatross if we can get to the albatross habitat. Post storms, you never know what could be out there. At the Morro Bay Bird Festival a couple of weeks ago post storm we found Laysan Albatross as well as an out of season Buller’s Shearwater in addition to great looks at Short-tailed Shearwater, and Black-legged Kittiwakes. Many of the Common Murre and Rhinoceros Auklet were in fine breeding plumage. We hope to be able to find some nice stuff this Sunday.

   To sign up: http://alvarosadventures.com/boat-trips/pelagics/

 

Good birding.

Alvaro

 

Alvaro Jaramillo

alvaro@...

www.alvarosadventures.com

 


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Orchard Oriole and other expected birds at Fort Mason

David Assmann
 

The young male ORCHARD ORIOLE in the Fort Mason Community Garden was interspersing rattle calls with song fragments this morning before the rain. The WHITE-THROATED SPARROW and a LINCOLN'S SPARROW put in a brief appearance. The WANDERING TATTLER was on the abandoned pier in Aquatic Park.

Black-legged Kittiwake at Cliff House (2 Feb)

Ken Schneider
 

Hi all,

I had brief looks and managed a single photo of an immature Black-legged Kittiwake seen just offshore from the Cliff House at about 0815 this morning.  A bit more detail at my eBird checklist here:
https://ebird.org/view/checklist/S52301096

I think the photo supports my ID, but I'm a little puzzled by the apparent dark markings on the underside of the left wing (perhaps the primary coverts?), which I don't see as expected in the field guides I checked... comments welcome.

Good birding!
Ken Schneider
Noe Valley

Fort Mason

Joachim Gonzalez
 

The Oriole continues but we didn’t get good enough views to confirm it as the Orchard. The Lincoln’s and White Throated Sparrows also continue as well as an unexpected Rufous/Allen’s Hummingbird l, most likely Allens.
Joachim G

Re: Black-legged Kittiwake at Cliff House (2 Feb)

Peter Pyle
 

Hi all -

This could be a first-year Red-legged Kittiwake. Worth looking into in any case. Not many photos on line of underwings of RLKI but here's one that shows a similar pattern:

https://www.birdguides-cdn.com/cdn/gallery/birds/Red-leggedKittiwakeFlyte1stS5Commanders1106.jpg

Both the primary coevrts and the tertial area being marked dark. By contrast I can't find a BLKI with either. February is the month for RLKI in CA.

Thought it worth mentioning in case others want to go look for it.

Peter

At 10:58 AM 2/2/2019, Ken Schneider wrote:
Hi all,

I had brief looks and managed a single photo of an immature Black-legged Kittiwake seen just offshore from the Cliff House at about 0815 this morning. A bit more detail at my eBird checklist here:
<https://ebird.org/view/checklist/S52301096>https://ebird.org/view/checklist/S52301096

I think the photo supports my ID, but I'm a little puzzled by the apparent dark markings on the underside of the left wing (perhaps the primary coverts?), which I don't see as expected in the field guides I checked... comments welcome.

Good birding!
Ken Schneider
Noe Valley

Re: Black-legged Kittiwake at Cliff House (2 Feb)

John Sterling
 

good call, Peter
I’ve never seen an immature black-legged kittiwake with those underwing patterns.


John Sterling
VVVVVVVVVVVVVVVVVV

26 Palm Ave
Woodland, CA 95695

PO Box 1653
Woodland, CA 95776A

530 908-3836
jsterling@...
www.sterlingbirds.com

On Feb 2, 2019, at 2:05 PM, Peter Pyle <ppyle@...> wrote:

Hi all -

This could be a first-year Red-legged Kittiwake. Worth looking into in any case. Not many photos on line of underwings of RLKI but here's one that shows a similar pattern:

https://www.birdguides-cdn.com/cdn/gallery/birds/Red-leggedKittiwakeFlyte1stS5Commanders1106.jpg

Both the primary coevrts and the tertial area being marked dark. By contrast I can't find a BLKI with either. February is the month for RLKI in CA.

Thought it worth mentioning in case others want to go look for it.

Peter

At 10:58 AM 2/2/2019, Ken Schneider wrote:
Hi all,

I had brief looks and managed a single photo of an immature Black-legged Kittiwake seen just offshore from the Cliff House at about 0815 this morning.  A bit more detail at my eBird checklist here:
<https://ebird.org/view/checklist/S52301096>https://ebird.org/view/checklist/S52301096

I think the photo supports my ID, but I'm a little puzzled by the apparent dark markings on the underside of the left wing (perhaps the primary coverts?), which I don't see as expected in the field guides I checked... comments welcome.

Good birding!
Ken Schneider
Noe Valley






Re: Black-legged Kittiwake at Cliff House (2 Feb)

Joe Morlan
 

Interesting possibility. My understanding is that immature Red-legged
Kittiwake does not have a "broad, dark hind collar" or a dark tip to the
tail.

On Sat, 02 Feb 2019 14:05:08 -0800, "Peter Pyle" <ppyle@...> wrote:

Hi all -

This could be a first-year Red-legged Kittiwake. Worth looking into
in any case. Not many photos on line of underwings of RLKI but here's
one that shows a similar pattern:

https://www.birdguides-cdn.com/cdn/gallery/birds/Red-leggedKittiwakeFlyte1stS5Commanders1106.jpg

Both the primary coevrts and the tertial area being marked dark. By
contrast I can't find a BLKI with either. February is the month for
RLKI in CA.

Thought it worth mentioning in case others want to go look for it.

Peter

At 10:58 AM 2/2/2019, Ken Schneider wrote:
Hi all,

I had brief looks and managed a single photo of an immature
Black-legged Kittiwake seen just offshore from the Cliff House at
about 0815 this morning. A bit more detail at my eBird checklist here:
<https://ebird.org/view/checklist/S52301096>https://ebird.org/view/checklist/S52301096

I think the photo supports my ID, but I'm a little puzzled by the
apparent dark markings on the underside of the left wing (perhaps
the primary coverts?), which I don't see as expected in the field
guides I checked... comments welcome.

Good birding!
Ken Schneider
Noe Valley

--
Joseph Morlan, Pacifica, CA

Re: Black-legged Kittiwake at Cliff House (2 Feb)

Alvaro Jaramillo
 

Looks like it has a black tail tip, eliminating Red-legged. It also does not look to have the contrast expected on secondaries and inner primaries that Red-legged would show.

Alvaro

 

Alvaro Jaramillo

alvaro@...

www.alvarosadventures.com

 

From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of John Sterling
Sent: Saturday, February 2, 2019 2:24 PM
To: Peter Pyle <ppyle@...>
Cc: Ken Schneider <kschnei1@...>; SFBirds@groups.io
Subject: Re: [SFBirds] Black-legged Kittiwake at Cliff House (2 Feb)

 

good call, Peter

I’ve never seen an immature black-legged kittiwake with those underwing patterns.

 

 

John Sterling
VVVVVVVVVVVVVVVVVV

26 Palm Ave
Woodland, CA 95695

PO Box 1653
Woodland, CA 95776A

530 908-3836
jsterling@...
www.sterlingbirds.com



On Feb 2, 2019, at 2:05 PM, Peter Pyle <ppyle@...> wrote:

 

Hi all -

This could be a first-year Red-legged Kittiwake. Worth looking into in any case. Not many photos on line of underwings of RLKI but here's one that shows a similar pattern:

https://www.birdguides-cdn.com/cdn/gallery/birds/Red-leggedKittiwakeFlyte1stS5Commanders1106.jpg

Both the primary coevrts and the tertial area being marked dark. By contrast I can't find a BLKI with either. February is the month for RLKI in CA.

Thought it worth mentioning in case others want to go look for it.

Peter

At 10:58 AM 2/2/2019, Ken Schneider wrote:

Hi all,

I had brief looks and managed a single photo of an immature Black-legged Kittiwake seen just offshore from the Cliff House at about 0815 this morning.  A bit more detail at my eBird checklist here:
<https://ebird.org/view/checklist/S52301096>https://ebird.org/view/checklist/S52301096

I think the photo supports my ID, but I'm a little puzzled by the apparent dark markings on the underside of the left wing (perhaps the primary coverts?), which I don't see as expected in the field guides I checked... comments welcome.

Good birding!
Ken Schneider
Noe Valley




 


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Re: Black-legged Kittiwake at Cliff House (2 Feb)

Peter Pyle
 

Thanks Joe and Al -

You are probably correct. All of my seabird reference books are boxed up at the moment so all I had was on-line images. There are some of young and winter adult RLKI that appear to show dark tail tips and/or hind collars:

https://www.birds-of-north-america.net/images/Red-legged_Kittiwake-12.jpg
http://orientalbirdimages.org/images/data/redlegged_2.jpg
https://www.naturepl.com/cache/pcache/08135133.jpg

but at least the dark-tipped tails are probably mis-identified BLKIs (e.g., 3rd photo above) as I recall this field mark now that you mention it.

Hard to explain this as oiling, especially the primary coverts, but perhaps this is what it is.

Peter

At 04:04 PM 2/2/2019, Alvaro Jaramillo wrote:
Looks like it has a black tail tip, eliminating Red-legged. It also does not look to have the contrast expected on secondaries and inner primaries that Red-legged would show.
Alvaro

Alvaro Jaramillo
<mailto:alvaro@...>alvaro@...
www.alvarosadventures.com

From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of John Sterling
Sent: Saturday, February 2, 2019 2:24 PM
To: Peter Pyle <ppyle@...>
Cc: Ken Schneider <kschnei1@...>; SFBirds@groups.io
Subject: Re: [SFBirds] Black-legged Kittiwake at Cliff House (2 Feb)

good call, Peter
I’ve never seen an immature black-legged kittiwake with those underwing patterns.


John Sterling
VVVVVVVVVVVVVVVVVV

26 Palm Ave
Woodland, CA 95695

PO Box 1653
Woodland, CA 95776A

530 908-3836
<mailto:jsterling@...>jsterling@...
www.sterlingbirds.com


On Feb 2, 2019, at 2:05 PM, Peter Pyle <<mailto:ppyle@...>ppyle@...> wrote:

Hi all -

This could be a first-year Red-legged Kittiwake. Worth looking into in any case. Not many photos on line of underwings of RLKI but here's one that shows a similar pattern:

<https://www.birdguides-cdn.com/cdn/gallery/birds/Red-leggedKittiwakeFlyte1stS5Commanders1106.jpg>https://www.birdguides-cdn.com/cdn/gallery/birds/Red-leggedKittiwakeFlyte1stS5Commanders1106.jpg

Both the primary coevrts and the tertial area being marked dark. By contrast I can't find a BLKI with either. February is the month for RLKI in CA.

Thought it worth mentioning in case others want to go look for it.

Peter

At 10:58 AM 2/2/2019, Ken Schneider wrote:

Hi all,

I had brief looks and managed a single photo of an immature Black-legged Kittiwake seen just offshore from the Cliff House at about 0815 this morning. A bit more detail at my eBird checklist here:
<<https://ebird.org/view/checklist/S52301096>https://ebird.org/view/checklist/S52301096>https://ebird.org/view/checklist/S52301096

I think the photo supports my ID, but I'm a little puzzled by the apparent dark markings on the underside of the left wing (perhaps the primary coverts?), which I don't see as expected in the field guides I checked... comments welcome.

Good birding!
Ken Schneider
Noe Valley







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Re: Black-legged Kittiwake at Cliff House (2 Feb)

Peter Pyle
 

although, come to think of it, could the tail tip (also) be oiled? P

At 04:20 PM 2/2/2019, Peter Pyle wrote:
Thanks Joe and Al -

You are probably correct. All of my seabird reference books are boxed up at the moment so all I had was on-line images. There are some of young and winter adult RLKI that appear to show dark tail tips and/or hind collars:

https://www.birds-of-north-america.net/images/Red-legged_Kittiwake-12.jpg
http://orientalbirdimages.org/images/data/redlegged_2.jpg
https://www.naturepl.com/cache/pcache/08135133.jpg

but at least the dark-tipped tails are probably mis-identified BLKIs (e.g., 3rd photo above) as I recall this field mark now that you mention it.

Hard to explain this as oiling, especially the primary coverts, but perhaps this is what it is.

Peter

At 04:04 PM 2/2/2019, Alvaro Jaramillo wrote:
Looks like it has a black tail tip, eliminating Red-legged. It also does not look to have the contrast expected on secondaries and inner primaries that Red-legged would show.
Alvaro

Alvaro Jaramillo
<mailto:alvaro@...>alvaro@...
www.alvarosadventures.com

From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of John Sterling
Sent: Saturday, February 2, 2019 2:24 PM
To: Peter Pyle <ppyle@...>
Cc: Ken Schneider <kschnei1@...>; SFBirds@groups.io
Subject: Re: [SFBirds] Black-legged Kittiwake at Cliff House (2 Feb)

good call, Peter
I’ve never seen an immature black-legged kittiwake with those underwing patterns.


John Sterling
VVVVVVVVVVVVVVVVVV

26 Palm Ave
Woodland, CA 95695

PO Box 1653
Woodland, CA 95776A

530 908-3836
<mailto:jsterling@...>jsterling@...
www.sterlingbirds.com


On Feb 2, 2019, at 2:05 PM, Peter Pyle <<mailto:ppyle@...>ppyle@...> wrote:

Hi all -

This could be a first-year Red-legged Kittiwake. Worth looking into in any case. Not many photos on line of underwings of RLKI but here's one that shows a similar pattern:

<https://www.birdguides-cdn.com/cdn/gallery/birds/Red-leggedKittiwakeFlyte1stS5Commanders1106.jpg>https://www.birdguides-cdn.com/cdn/gallery/birds/Red-leggedKittiwakeFlyte1stS5Commanders1106.jpg

Both the primary coevrts and the tertial area being marked dark. By contrast I can't find a BLKI with either. February is the month for RLKI in CA.

Thought it worth mentioning in case others want to go look for it.

Peter

At 10:58 AM 2/2/2019, Ken Schneider wrote:

Hi all,

I had brief looks and managed a single photo of an immature Black-legged Kittiwake seen just offshore from the Cliff House at about 0815 this morning. A bit more detail at my eBird checklist here:
<<https://ebird.org/view/checklist/S52301096>https://ebird.org/view/checklist/S52301096>https://ebird.org/view/checklist/S52301096

I think the photo supports my ID, but I'm a little puzzled by the apparent dark markings on the underside of the left wing (perhaps the primary coverts?), which I don't see as expected in the field guides I checked... comments welcome.

Good birding!
Ken Schneider
Noe Valley







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Re: Black-legged Kittiwake at Cliff House (2 Feb)

Alvaro Jaramillo
 

Peter
Yes, the third photo you sent is of a Black-legged Kittiwake. Structurally the legs are too long, eye too small, and bill too large. On plumage the mantle is too pale, and the wing markings more intense than on Red-legged.
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, February 2, 2019 4:21 PM
To: Alvaro Jaramillo <chucao@...>
Cc: 'John Sterling' <jsterling@...>; 'Ken Schneider' <kschnei1@...>; SFBirds@groups.io
Subject: Re: [SFBirds] Black-legged Kittiwake at Cliff House (2 Feb)

Thanks Joe and Al -

You are probably correct. All of my seabird reference books are boxed up at the moment so all I had was on-line images. There are some of young and winter adult RLKI that appear to show dark tail tips and/or hind collars:

https://www.birds-of-north-america.net/images/Red-legged_Kittiwake-12.jpg
http://orientalbirdimages.org/images/data/redlegged_2.jpg
https://www.naturepl.com/cache/pcache/08135133.jpg

but at least the dark-tipped tails are probably mis-identified BLKIs (e.g., 3rd photo above) as I recall this field mark now that you mention it.

Hard to explain this as oiling, especially the primary coverts, but perhaps this is what it is.

Peter

At 04:04 PM 2/2/2019, Alvaro Jaramillo wrote:
Looks like it has a black tail tip, eliminating Red-legged. It also
does not look to have the contrast expected on secondaries and inner
primaries that Red-legged would show.
Alvaro

Alvaro Jaramillo
<mailto:alvaro@...>alvaro@...
www.alvarosadventures.com

From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of John Sterling
Sent: Saturday, February 2, 2019 2:24 PM
To: Peter Pyle <ppyle@...>
Cc: Ken Schneider <kschnei1@...>; SFBirds@groups.io
Subject: Re: [SFBirds] Black-legged Kittiwake at Cliff House (2 Feb)

good call, Peter
I’ve never seen an immature black-legged kittiwake with those
underwing patterns.


John Sterling
VVVVVVVVVVVVVVVVVV

26 Palm Ave
Woodland, CA 95695

PO Box 1653
Woodland, CA 95776A

530 908-3836
<mailto:jsterling@...>jsterling@...
www.sterlingbirds.com


On Feb 2, 2019, at 2:05 PM, Peter Pyle
<<mailto:ppyle@...>ppyle@...> wrote:

Hi all -

This could be a first-year Red-legged Kittiwake.
Worth looking into in any case. Not many photos on line of underwings
of RLKI but here's one that shows a similar pattern:

<https://www.birdguides-cdn.com/cdn/gallery/birds/Red-leggedKittiwakeFl
yte1stS5Commanders1106.jpg>https://www.birdguides-cdn.com/cdn/gallery/b
irds/Red-leggedKittiwakeFlyte1stS5Commanders1106.jpg

Both the primary coevrts and the tertial area being marked dark. By
contrast I can't find a BLKI with either. February is the month for
RLKI in CA.

Thought it worth mentioning in case others want to go look for it.

Peter

At 10:58 AM 2/2/2019, Ken Schneider wrote:

Hi all,

I had brief looks and managed a single photo of an immature
Black-legged Kittiwake seen just offshore from the Cliff House at about
0815 this morning. A bit more detail at my eBird checklist here:
<<https://ebird.org/view/checklist/S52301096>https://ebird.org/view/che
cklist/S52301096>https://ebird.org/view/checklist/S52301096

I think the photo supports my ID, but I'm a little puzzled by the
apparent dark markings on the underside of the left wing (perhaps the
primary coverts?), which I don't see as expected in the field guides I
checked... comments welcome.

Good birding!
Ken Schneider
Noe Valley







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