Date   

Sutro Rhino & Odd Duck

Brian Fitch
 

I spent several early hours at the Baths this morning, mostly watching an amazing feeding group of over a thousand Brandt's Cormorants mixed with lesser numbers of murres, gulls, and pelicans, all expected species.  There were also a lot of Surf Scoters flying in various directions, and I kept checking for the less expected species. 

Sometime after 7AM, an unusual looking duck flew from the Gate southbound, paralleling a Pigeon Guillemot.  The duck was only a little bigger than the PIGU, and had a small bill compared to the many scoters I'd been seeing.  I thought Harlequin, but the bird had no white on the belly or anywhere else except several spots on the face, and the body plumage was uneven, showing some rich brownish tones near the rear flanks.  Most interesting was a pale brown panel in the scapular/tertial area of each wing, something I've never seen on any scoter, but also not on any wintering female Harley.  I don't know molt sequence in Harlequins, but wonder if it could have been a first year male, yet I could find nothing on-line which in any way matched my sighting.  So another un-ID'd bird to go along with the bizarre gull from last month.

Later on, an alternate plumaged Rhinoceros Auklet flew in, loosely associating with the PIGU's, and eventually settled on the water.  A Wandering Tattler was on the rocks by the Cliff House, and two Western Kingbirds flew over the 48th Ave parking area at Land's End.  A Humpback Whale was feeding to the NW, and what was likely a distant Gray spouted multiple times to the SW.

Yesterday, I had brief looks at the Ash-throated Flycatcher that Dom found at Corona Heights, just before I was bitten by an off-leash dog.  Luckily, it only bit into the fabric of my pant leg.

Brian Fitch


White-faced Ibis

Aaron Maizlish
 

Following up on a eBird report from earlier today by Graeme Colmer I came down to candlestick point to look for a reported Ibis. I haven’t even made it to the bay, a beautiful White-faced Ibis is feeding in the little seasonal pond at the north end of the park. Seems very comfortable here, but I would get over here quickly if you want to see it, it’s a small pond. County bird for me.

Aaron Maizlish
San Francisco


More migrant madness

Daniel Scali
 

Hi,

Same spot as yesterday. Heard Drake’s “Hotline Bling” that Aaron Maizlisch pointed us to last year for the Stow Black-throated Green Warbler.

I’m not confident enough in what I saw. But it’s popping if you can get over there.

Good birding,
Dan Scali


McLaren Migrants (and a vagrant)

Daniel Scali
 

Y’all,

Holy cowbird! Or, as the famous birder Ice Cube once said, “Today was a good day.”

The Hooded Warbler stuck around at least till 2:30pm when it stopped singing for the last time before I left. A few SF birders got ok peeks.

Also in that afternoon visit I was chasing down more singing that was “interesting” with Lazuli Bunting a definite thought somewhere in my mind. Halfway around the upper pond I was rewarded with a boldly singing Lazuli male (I assume) and a 2nd individual, also with significant blue coloring. I want to apologize to the group for my terrible fact-checking re: my previous Lazuli Bunting post. My panic about wild radish removal and absent breeders was 3 weeks too early. The first sighting in the park in 2018 was on April 30, the second during a GGAS field trip on May 5, and the first singing, from my ebird data anyway, wasn’t until mid-May. I’m feeling optimistic.

Other spring fun at McPark: Pac-Slope and Olive-sided Flycatchers, Hermit and Black-throated Gray Warblers, Cassin’s and Warbling Vireos, Western Tanagers and a Wood-pewee, Black-headed Grosbeaks, and the recent arrival Swanson’s Thrushes.

Keep’em comin’
Dan Scali



Re: Hooded Warbler McLaren

Kevin Liberg
 

Here is a link to  ebird list with Hooded Warbler photos


Hooded Warbler McLaren

Daniel Scali
 
Edited

All,
 
Ran into Kevin Liberg at McLaren Park and after some wandering we heard some warblers. One song was loud and unfamiliar and after much searching we got eyes on a Hooded Warbler as it popped out of a patch of blackberry. (This was 10 min ago) I’ll try to post a screenshot of the location. Didn’t work. I had to leave for a class but Kevin was sticking around. 

Look for it on the north side of J F Shelley by walking west a few hundred yards from the intersection of Mansell and John F Shelley. It was in the blackberry patch behind a fence. I hope it can be refound!
 
Good birding!
Dan Scali, sf 


Breeding and Baby Birds Too

Richard Bradus
 

Hi all

Some interesting natural history taking place in our midst as spring progresses. On an exploration of the southeast corner of the Presidio late this morning I was fortunate to encounter some more breeding activity by our year-round residents - and, yes, one notable migrant, a Swainson's Thrush that was foraging in dense cover below the Presidio Gate. Multiple singing Song and White-crowned Sparrows, Robins and House Finches, plus Purple Finch, Cowbird, Hutton's Vireo and Pacific Wren. Song sparrow and Lesser Goldfinch females carrying nesting material, and Pygmy Nuthatches about a nest hole. One pair of CA Towhee caught in the act. Plus a pair of Hooded Orioles likely nesting again in a palm at the edge of the residential area.

Walking back I spotted a fledgling Junco being fed by a parent, after earlier seeing a House Finch fledgling that looked to be a couple of weeks out of the nest being fed by its presumed father. Also an interesting courtship/bonding ritual as a male House Finch fed its begging mate. Notably, I've seen multiple House Finch fledglings being fed over the past ten days or so, all by the male of the pair, while the one episode of feeding of nestlings that I saw was done by the female. Seems to be an interesting division of parenting duties.

Despite the continued low overcast there were also quite a few butterflies about, mostly painted ladies, and I also spotted a bee swarm. All this despite the felling of multiple trees along Pacific Ave., presumably part of the re-invigoration of the native forest/scrub habitat. It will be interesting to see if woodpeckers, completely absent on this visit, return once the disruption is over. And more babies; just after 1pm on a quick walk through Alta Plaza Park I stopped to investigate some high pitched begging calls and was rewarded as a pair of Oregon Juncos fed two very recent fledglings. Now I'm waiting on the resident Ravens and Pygmy Nuthatches to produce their young - and I still haven't found a Robin's nest (!?).

So, lots of examples of the cycle of life out there to witness and learn from, if we just stop to look and listen.

Enjoy!

Richard Bradus
San Francisco


Nesting Anna's Hummer at SOTA (McAteer High School)

alan lyons
 

My daughter discovered what we assume to be an Anna's Hummingbird nest with parent on branch within catwalks/stairways on east side of the main high school building. See photo. Apparently it is almost within arms reach and bird did not flush enabling very close observation.

Alan Lyons San Francisco

----- Forwarded Message -----

From: Alan Lyons <editedge@...>
To: Alan Lyons <editedge@...>
Sent: Wednesday, May 8, 2019, 4:12:57 PM PDT
Subject: IMG_2540.JPG






Scattered migrants throughout

Josiah Clark
 

To add on to Brian’s report, I also had a good number of migrants yesterday morning and this morning before and during work.
“Trolling the Dawn” By bicycle I noted the following:
Lazuli bunting, Swainson thrush-ft scott
Warbling Vireos-Several locations in Golden Gate Park, and the Presidio including Mountain Lake Park.
Western Tanager-Probably the most widespread migrant with 6+ singing along jfk , ggp lakes and Ft scott
Cedar Waxwing-large flocks speedway meadows ggp and 100+ mnt lake park
While at a job site on your Buena Island, it was heartening to hear a warbling vireo singing from a lone Oak aside the very loud traffic filled freeway.

On the ocean- brown pelicans are making their way north in force from their breeding grounds.
After being nearly absent just a week ago, I have noted over 100 in the last couple of days. At least a couple Heermans gulls as well.
Off the Cliff House yesterday there was an impressive cormorant feeding frenzy with at least one humpback whale in the mix.
Whimbrel and Sanderling numbers seem notably high right for this late in the spring . 100 or more of each were still present around the beach gray whale at Ocean Beach.
Spring Vagrant season is upon us shortly. Listen for those unusual songs. The Second two weeks in May and the first two weeks of June are times to expect the unexpected.


Very Minor Fallout

Brian Fitch
 

I expected more birds today considering the light rain and the date, and I covered a number of sites to try and fulfill that hope.  But things were pretty quiet on my first day of birding SF after three weeks watching migration in Greece.  It was also cold and windy there, and many species were two or more weeks late in arriving.  I finally did run across a small flock at Buena Vista, which I had only a little time to work through before heading home.  The migrants there were just east of the summit.

Today's highlights included:
Olive-sided Flycatcher - Buena Vista
Hammond's Flycatcher - East Wash
Swainson's Thrush - EW
Hermit Warbler - BV
Western Tanager - BV and Battery Godfrey
Lazuli Bunting - 1 at BG, 2 at Ft Scott, 1 at BV
Black-headed Grosbeak - BV
Bullock's Oriole - BV

Also a single Humpback at the Sutro Baths.
Brian Fitch


Re: Possible Black-tailed Gull Lake Merced Boathouse

Peter Pyle
 

Hi Al -

Appreciate your detailed response. A lot of folks monitor these sites to learn about these complex subjects and it's great to have helpful responses. Yes, "confused" is an operative word by most when it comes to gulls, and my aim is to try my best to crack these nuts. I too look a lot at gulls and well know not to let one odd mark determine an outcome. Age, molt status, time of year, feather-by-feather analysis in consideration of feather generation, etc., is what needs to happen.

I know folks have mis-ID'd Black-tailed as California Gulls in the past, even here in SF, so it's not pie in the sky to look closely at odd Californias. In any case, I hope others may have gained something from this exercise, as I have, whether or not a final outcome is agreed to. Here's to one of us (including readers of this site) finding a Black-tailed Gull!

Peter

At 02:23 PM 5/5/2019, Alvaro Jaramillo wrote:
All,
My thought, from someone who spends a ton of time looking at gulls, is
that Peter's gull looks absolutely normal for a California other than the
deformed bill. This is an opinion based on looking diligently at gulls, not
a flippant comment. By looking normal, I mean it really does not show
anything unusual other than that bill. So I find it confusing that there is
any need to "dig deeper" on a bird such as this. It is not a Larus sp? As
you noted in a previous email, it is definitively a California Gull. It is
also a bird in its first cycle, in transition to the second cycle. So those
primaries and tail are juvie feathers. I think that bill threw you. The back
darkness looks within the norm as well compared to adjacent gulls.
Here are some photos to look at tail pattern. First cycle Californias
routinely look dark tailed, some with a small amount of white spotting on
the narrow outer vane of the outer tail feathers. But many, perhaps most,
also show some pale barring on the inside (inner vane) of the outer
rectrices. In most cases you cannot see this, you need the tail to be fully
spread or you need to see it from below. As these birds wear and fade, these
areas become more prominent as the outer vanes wear, and also as the pale
barring becomes paler through fading.

https://www.flickr.com/photos/alvarojaramillo/47730592402/in/dateposted-publ
ic/
https://www.flickr.com/photos/alvarojaramillo/32839366407/in/dateposted-publ
ic/
https://www.flickr.com/photos/alvarojaramillo/47730592762/in/dateposted-publ
ic/

I am continuing this discussion mainly for the folks out there looking at
gulls, who like studying the local species, and are hoping to find a
Black-tailed Gull one day. I am one of those hoping to do so, I think 5 more
years should do it!! But trust me, the day that one shows up in front of
you, it will be clear-cut. They are a distinctive gull, and will stand out
like sore thumbs in our local gulls. But these oddball versions of our local
birds (the bill of this bird for example), can throw you for a loop. That is
understandable.

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Sunday, May 5, 2019 9:40 AM
To: jmorlan@...
Cc: Alvaro Jaramillo <chucao@...>; SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

Hi Joe and Al -

Appreciate the responses and will concede that it is most likely a CAGU,
though I'd question first-cycle with that much dark gray in the back and
this tail pattern. As we know, second-cycle (or first-cycle) gulls in May
are extremely variable, and I was able to find some trashed Black-taileds on
line that resembled this bird in bill color and body plumage. Even one with
an exaggerated hook to the tip like this bird had. Very few photos are
available of the spread tails of CAGUs and those that I could find showed
all-dark rectrices
(1st-cycle) or barred bases (second-cycle) and none with pale tips or a
banded appearance. Of course with second-cycle gulls I prefer something
concrete to just, oh, it looks 'normal' for this without digging deeper. The
back also appeared quite dark for CAGU, matching Black-tailed better, but
can go with this being a lighting effect or within variation of fresh
second-alternate feathers.

In the end, I went back to the primary literature including this paper in
Auk
<http://www.gull-research.org/california/pfds/Behle%20&%20Selander%20(1953)%
20%20Auk%2070.pdf>http://www.gull-research.org/california/pfds/Behle%20&%20S
elander%20(1953)%20%20Auk%2070.pdf

which does show tail patterns of CAGU that come closer to the bird
yesterday.

Peter

At 06:13 AM 5/5/2019, Joseph Morlan wrote:
All,

Just for reference, I thought I would share photos of first and second
cycle Black-tailed Gulls from 7 May last year in Japan. They are the
top two photos here:

https://fog.ccsf.edu/~jmorlan/Japan-Alaska17/Black-tailedGullIMG_7618.h
tm


On Sat, 4 May 2019 20:49:49 -0700, "Alvaro Jaramillo"
<chucao@...> wrote:

Peter
Hey there. I am confused here, to me this bird looks like a
perfectly normal California Gull except for the bill. The bill is
deformed, and apart from the shape, one telltale feature that it is
deformed is that mealy look to the color of the bill. Often deformed
gulls have this mealy bill color. I am not sure why, but it is pretty
consistent.
The tail looks normal to me as well. This is a juvenal tail, and
does not look odd for a worn juv. Tail to me. Back darkness looks normal
as well.

Cheers,
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 8:16 PM
To: Alvaro Jaramillo <chucao@...>
Cc: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced
Boathouse

I've done some research and can't find close matches with
second-cycle Black-tailed so will re-identify it in eBird as Gull sp.
The back still looks dark to me for CAGU and I'd like to find one
with a tail pattern like this bird has. Both species at this age are
of course extremely variable, which makes it but fun and a challenge.
Comments on specific identification criteria, pro and con, still
welcomed.

Peter

At 07:48 PM 5/4/2019, Alvaro Jaramillo wrote:
Peter
It is a California Gull with a deformed bill.
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 6:13 PM
To: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced
Boathouse

<https://ebird.org/view/checklist/S55815948>https://ebird.org/view/c
hec
klist
/S55815948


comments welcome on photos. P

At 05:30 PM 5/4/2019, Peter Pyle via Groups.Io wrote:
Just getting a quick word out. It's a second-cycle bird with a big
long bill - thought it was a deform-billed CAGU but now that I'm
looking at my photos the darker back and tail pattern may point
more to Black-tailed. Will post photos to eBird. It was on the
western of the three docks, the wide trex one. I flushed it to get
flight shots but it pulled around and landed back on the dock with
about 25 WEGUs.
Also the continuing Palm Warbler in the myopoum at the top of the
pull-out hill.

This is in Lake Merced Park along Harding Road to the entrance of
Harding Park golf course, north end of south arm of Lake Merced.

Cheers, Peter






---
This email has been checked for viruses by AVG.
https://www.avg.com




--
Joseph Morlan, Pacifica, CA


Re: Possible Black-tailed Gull Lake Merced Boathouse

Alvaro Jaramillo
 

All,
My thought, from someone who spends a ton of time looking at gulls, is
that Peter's gull looks absolutely normal for a California other than the
deformed bill. This is an opinion based on looking diligently at gulls, not
a flippant comment. By looking normal, I mean it really does not show
anything unusual other than that bill. So I find it confusing that there is
any need to "dig deeper" on a bird such as this. It is not a Larus sp? As
you noted in a previous email, it is definitively a California Gull. It is
also a bird in its first cycle, in transition to the second cycle. So those
primaries and tail are juvie feathers. I think that bill threw you. The back
darkness looks within the norm as well compared to adjacent gulls.
Here are some photos to look at tail pattern. First cycle Californias
routinely look dark tailed, some with a small amount of white spotting on
the narrow outer vane of the outer tail feathers. But many, perhaps most,
also show some pale barring on the inside (inner vane) of the outer
rectrices. In most cases you cannot see this, you need the tail to be fully
spread or you need to see it from below. As these birds wear and fade, these
areas become more prominent as the outer vanes wear, and also as the pale
barring becomes paler through fading.

https://www.flickr.com/photos/alvarojaramillo/47730592402/in/dateposted-publ
ic/
https://www.flickr.com/photos/alvarojaramillo/32839366407/in/dateposted-publ
ic/
https://www.flickr.com/photos/alvarojaramillo/47730592762/in/dateposted-publ
ic/

I am continuing this discussion mainly for the folks out there looking at
gulls, who like studying the local species, and are hoping to find a
Black-tailed Gull one day. I am one of those hoping to do so, I think 5 more
years should do it!! But trust me, the day that one shows up in front of
you, it will be clear-cut. They are a distinctive gull, and will stand out
like sore thumbs in our local gulls. But these oddball versions of our local
birds (the bill of this bird for example), can throw you for a loop. That is
understandable.

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Sunday, May 5, 2019 9:40 AM
To: jmorlan@...
Cc: Alvaro Jaramillo <chucao@...>; SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

Hi Joe and Al -

Appreciate the responses and will concede that it is most likely a CAGU,
though I'd question first-cycle with that much dark gray in the back and
this tail pattern. As we know, second-cycle (or first-cycle) gulls in May
are extremely variable, and I was able to find some trashed Black-taileds on
line that resembled this bird in bill color and body plumage. Even one with
an exaggerated hook to the tip like this bird had. Very few photos are
available of the spread tails of CAGUs and those that I could find showed
all-dark rectrices
(1st-cycle) or barred bases (second-cycle) and none with pale tips or a
banded appearance. Of course with second-cycle gulls I prefer something
concrete to just, oh, it looks 'normal' for this without digging deeper. The
back also appeared quite dark for CAGU, matching Black-tailed better, but
can go with this being a lighting effect or within variation of fresh
second-alternate feathers.

In the end, I went back to the primary literature including this paper in
Auk
<http://www.gull-research.org/california/pfds/Behle%20&%20Selander%20(1953)%
20%20Auk%2070.pdf>http://www.gull-research.org/california/pfds/Behle%20&%20S
elander%20(1953)%20%20Auk%2070.pdf

which does show tail patterns of CAGU that come closer to the bird
yesterday.

Peter

At 06:13 AM 5/5/2019, Joseph Morlan wrote:
All,

Just for reference, I thought I would share photos of first and second
cycle Black-tailed Gulls from 7 May last year in Japan. They are the
top two photos here:

https://fog.ccsf.edu/~jmorlan/Japan-Alaska17/Black-tailedGullIMG_7618.h
tm


On Sat, 4 May 2019 20:49:49 -0700, "Alvaro Jaramillo"
<chucao@...> wrote:

Peter
Hey there. I am confused here, to me this bird looks like a
perfectly normal California Gull except for the bill. The bill is
deformed, and apart from the shape, one telltale feature that it is
deformed is that mealy look to the color of the bill. Often deformed
gulls have this mealy bill color. I am not sure why, but it is pretty
consistent.
The tail looks normal to me as well. This is a juvenal tail, and
does not look odd for a worn juv. Tail to me. Back darkness looks normal
as well.

Cheers,
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 8:16 PM
To: Alvaro Jaramillo <chucao@...>
Cc: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced
Boathouse

I've done some research and can't find close matches with
second-cycle Black-tailed so will re-identify it in eBird as Gull sp.
The back still looks dark to me for CAGU and I'd like to find one
with a tail pattern like this bird has. Both species at this age are
of course extremely variable, which makes it but fun and a challenge.
Comments on specific identification criteria, pro and con, still
welcomed.

Peter

At 07:48 PM 5/4/2019, Alvaro Jaramillo wrote:
Peter
It is a California Gull with a deformed bill.
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 6:13 PM
To: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced
Boathouse

<https://ebird.org/view/checklist/S55815948>https://ebird.org/view/c
hec
klist
/S55815948


comments welcome on photos. P

At 05:30 PM 5/4/2019, Peter Pyle via Groups.Io wrote:
Just getting a quick word out. It's a second-cycle bird with a big
long bill - thought it was a deform-billed CAGU but now that I'm
looking at my photos the darker back and tail pattern may point
more to Black-tailed. Will post photos to eBird. It was on the
western of the three docks, the wide trex one. I flushed it to get
flight shots but it pulled around and landed back on the dock with
about 25 WEGUs.
Also the continuing Palm Warbler in the myopoum at the top of the
pull-out hill.

This is in Lake Merced Park along Harding Road to the entrance of
Harding Park golf course, north end of south arm of Lake Merced.

Cheers, Peter






---
This email has been checked for viruses by AVG.
https://www.avg.com




--
Joseph Morlan, Pacifica, CA


Re: Possible Black-tailed Gull Lake Merced Boathouse

Peter Pyle
 

Hi Joe and Al -

Appreciate the responses and will concede that it is most likely a CAGU, though I'd question first-cycle with that much dark gray in the back and this tail pattern. As we know, second-cycle (or first-cycle) gulls in May are extremely variable, and I was able to find some trashed Black-taileds on line that resembled this bird in bill color and body plumage. Even one with an exaggerated hook to the tip like this bird had. Very few photos are available of the spread tails of CAGUs and those that I could find showed all-dark rectrices (1st-cycle) or barred bases (second-cycle) and none with pale tips or a banded appearance. Of course with second-cycle gulls I prefer something concrete to just, oh, it looks 'normal' for this without digging deeper. The back also appeared quite dark for CAGU, matching Black-tailed better, but can go with this being a lighting effect or within variation of fresh second-alternate feathers.

In the end, I went back to the primary literature including this paper in Auk
<http://www.gull-research.org/california/pfds/Behle%20&%20Selander%20(1953)%20%20Auk%2070.pdf>http://www.gull-research.org/california/pfds/Behle%20&%20Selander%20(1953)%20%20Auk%2070.pdf

which does show tail patterns of CAGU that come closer to the bird yesterday.

Peter

At 06:13 AM 5/5/2019, Joseph Morlan wrote:
All,

Just for reference, I thought I would share photos of first and second
cycle Black-tailed Gulls from 7 May last year in Japan. They are the top
two photos here:

https://fog.ccsf.edu/~jmorlan/Japan-Alaska17/Black-tailedGullIMG_7618.htm


On Sat, 4 May 2019 20:49:49 -0700, "Alvaro Jaramillo"
<chucao@...> wrote:

Peter
Hey there. I am confused here, to me this bird looks like a perfectly
normal California Gull except for the bill. The bill is deformed, and apart
from the shape, one telltale feature that it is deformed is that mealy look
to the color of the bill. Often deformed gulls have this mealy bill color. I
am not sure why, but it is pretty consistent.
The tail looks normal to me as well. This is a juvenal tail, and does
not look odd for a worn juv. Tail to me. Back darkness looks normal as well.

Cheers,
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 8:16 PM
To: Alvaro Jaramillo <chucao@...>
Cc: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

I've done some research and can't find close matches with second-cycle
Black-tailed so will re-identify it in eBird as Gull sp.
The back still looks dark to me for CAGU and I'd like to find one with a
tail pattern like this bird has. Both species at this age are of course
extremely variable, which makes it but fun and a challenge.
Comments on specific identification criteria, pro and con, still welcomed.

Peter

At 07:48 PM 5/4/2019, Alvaro Jaramillo wrote:
Peter
It is a California Gull with a deformed bill.
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 6:13 PM
To: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

<https://ebird.org/view/checklist/S55815948>https://ebird.org/view/chec
klist
/S55815948


comments welcome on photos. P

At 05:30 PM 5/4/2019, Peter Pyle via Groups.Io wrote:
Just getting a quick word out. It's a second-cycle bird with a big
long bill - thought it was a deform-billed CAGU but now that I'm
looking at my photos the darker back and tail pattern may point more
to Black-tailed. Will post photos to eBird. It was on the western of
the three docks, the wide trex one. I flushed it to get flight shots
but it pulled around and landed back on the dock with about 25 WEGUs.
Also the continuing Palm Warbler in the myopoum at the top of the
pull-out hill.

This is in Lake Merced Park along Harding Road to the entrance of
Harding Park golf course, north end of south arm of Lake Merced.

Cheers, Peter






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This email has been checked for viruses by AVG.
https://www.avg.com




--
Joseph Morlan, Pacifica, CA


Re: Possible Black-tailed Gull Lake Merced Boathouse

Joe Morlan
 

All,

Just for reference, I thought I would share photos of first and second
cycle Black-tailed Gulls from 7 May last year in Japan. They are the top
two photos here:

https://fog.ccsf.edu/~jmorlan/Japan-Alaska17/Black-tailedGullIMG_7618.htm


On Sat, 4 May 2019 20:49:49 -0700, "Alvaro Jaramillo"
<chucao@...> wrote:

Peter
Hey there. I am confused here, to me this bird looks like a perfectly
normal California Gull except for the bill. The bill is deformed, and apart
from the shape, one telltale feature that it is deformed is that mealy look
to the color of the bill. Often deformed gulls have this mealy bill color. I
am not sure why, but it is pretty consistent.
The tail looks normal to me as well. This is a juvenal tail, and does
not look odd for a worn juv. Tail to me. Back darkness looks normal as well.

Cheers,
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 8:16 PM
To: Alvaro Jaramillo <chucao@...>
Cc: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

I've done some research and can't find close matches with second-cycle
Black-tailed so will re-identify it in eBird as Gull sp.
The back still looks dark to me for CAGU and I'd like to find one with a
tail pattern like this bird has. Both species at this age are of course
extremely variable, which makes it but fun and a challenge.
Comments on specific identification criteria, pro and con, still welcomed.

Peter

At 07:48 PM 5/4/2019, Alvaro Jaramillo wrote:
Peter
It is a California Gull with a deformed bill.
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 6:13 PM
To: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

<https://ebird.org/view/checklist/S55815948>https://ebird.org/view/chec
klist
/S55815948


comments welcome on photos. P

At 05:30 PM 5/4/2019, Peter Pyle via Groups.Io wrote:
Just getting a quick word out. It's a second-cycle bird with a big
long bill - thought it was a deform-billed CAGU but now that I'm
looking at my photos the darker back and tail pattern may point more
to Black-tailed. Will post photos to eBird. It was on the western of
the three docks, the wide trex one. I flushed it to get flight shots
but it pulled around and landed back on the dock with about 25 WEGUs.
Also the continuing Palm Warbler in the myopoum at the top of the
pull-out hill.

This is in Lake Merced Park along Harding Road to the entrance of
Harding Park golf course, north end of south arm of Lake Merced.

Cheers, Peter






---
This email has been checked for viruses by AVG.
https://www.avg.com




--
Joseph Morlan, Pacifica, CA


Re: Possible Black-tailed Gull Lake Merced Boathouse

Alvaro Jaramillo
 

Peter
Hey there. I am confused here, to me this bird looks like a perfectly
normal California Gull except for the bill. The bill is deformed, and apart
from the shape, one telltale feature that it is deformed is that mealy look
to the color of the bill. Often deformed gulls have this mealy bill color. I
am not sure why, but it is pretty consistent.
The tail looks normal to me as well. This is a juvenal tail, and does
not look odd for a worn juv. Tail to me. Back darkness looks normal as well.

Cheers,
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 8:16 PM
To: Alvaro Jaramillo <chucao@...>
Cc: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

I've done some research and can't find close matches with second-cycle
Black-tailed so will re-identify it in eBird as Gull sp.
The back still looks dark to me for CAGU and I'd like to find one with a
tail pattern like this bird has. Both species at this age are of course
extremely variable, which makes it but fun and a challenge.
Comments on specific identification criteria, pro and con, still welcomed.

Peter

At 07:48 PM 5/4/2019, Alvaro Jaramillo wrote:
Peter
It is a California Gull with a deformed bill.
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 6:13 PM
To: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

<https://ebird.org/view/checklist/S55815948>https://ebird.org/view/chec
klist
/S55815948


comments welcome on photos. P

At 05:30 PM 5/4/2019, Peter Pyle via Groups.Io wrote:
Just getting a quick word out. It's a second-cycle bird with a big
long bill - thought it was a deform-billed CAGU but now that I'm
looking at my photos the darker back and tail pattern may point more
to Black-tailed. Will post photos to eBird. It was on the western of
the three docks, the wide trex one. I flushed it to get flight shots
but it pulled around and landed back on the dock with about 25 WEGUs.
Also the continuing Palm Warbler in the myopoum at the top of the
pull-out hill.

This is in Lake Merced Park along Harding Road to the entrance of
Harding Park golf course, north end of south arm of Lake Merced.

Cheers, Peter






---
This email has been checked for viruses by AVG.
https://www.avg.com


Re: Possible Black-tailed Gull Lake Merced Boathouse

Peter Pyle
 

I've done some research and can't find close matches with second-cycle Black-tailed so will re-identify it in eBird as Gull sp. The back still looks dark to me for CAGU and I'd like to find one with a tail pattern like this bird has. Both species at this age are of course extremely variable, which makes it but fun and a challenge. Comments on specific identification criteria, pro and con, still welcomed.

Peter

At 07:48 PM 5/4/2019, Alvaro Jaramillo wrote:
Peter
It is a California Gull with a deformed bill.
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 6:13 PM
To: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

<https://ebird.org/view/checklist/S55815948>https://ebird.org/view/checklist
/S55815948


comments welcome on photos. P

At 05:30 PM 5/4/2019, Peter Pyle via Groups.Io wrote:
Just getting a quick word out. It's a second-cycle bird with a big long
bill - thought it was a deform-billed CAGU but now that I'm looking at
my photos the darker back and tail pattern may point more to
Black-tailed. Will post photos to eBird. It was on the western of the
three docks, the wide trex one. I flushed it to get flight shots but it
pulled around and landed back on the dock with about 25 WEGUs. Also the
continuing Palm Warbler in the myopoum at the top of the pull-out hill.

This is in Lake Merced Park along Harding Road to the entrance of
Harding Park golf course, north end of south arm of Lake Merced.

Cheers, Peter






---
This email has been checked for viruses by AVG.
https://www.avg.com


Re: Possible Black-tailed Gull Lake Merced Boathouse

Alvaro Jaramillo
 

Peter
It is a California Gull with a deformed bill.
Alvaro

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

-----Original Message-----
From: SFBirds@groups.io <SFBirds@groups.io> On Behalf Of Peter Pyle
Sent: Saturday, May 4, 2019 6:13 PM
To: SFBirds@groups.io
Subject: Re: [SFBirds] Possible Black-tailed Gull Lake Merced Boathouse

<https://ebird.org/view/checklist/S55815948>https://ebird.org/view/checklist
/S55815948


comments welcome on photos. P

At 05:30 PM 5/4/2019, Peter Pyle via Groups.Io wrote:
Just getting a quick word out. It's a second-cycle bird with a big long
bill - thought it was a deform-billed CAGU but now that I'm looking at
my photos the darker back and tail pattern may point more to
Black-tailed. Will post photos to eBird. It was on the western of the
three docks, the wide trex one. I flushed it to get flight shots but it
pulled around and landed back on the dock with about 25 WEGUs. Also the
continuing Palm Warbler in the myopoum at the top of the pull-out hill.

This is in Lake Merced Park along Harding Road to the entrance of
Harding Park golf course, north end of south arm of Lake Merced.

Cheers, Peter






---
This email has been checked for viruses by AVG.
https://www.avg.com


Re: Possible Black-tailed Gull Lake Merced Boathouse

Peter Pyle
 

At 05:30 PM 5/4/2019, Peter Pyle via Groups.Io wrote:
Just getting a quick word out. It's a second-cycle bird with a big long bill - thought it was a deform-billed CAGU but now that I'm looking at my photos the darker back and tail pattern may point more to Black-tailed. Will post photos to eBird. It was on the western of the three docks, the wide trex one. I flushed it to get flight shots but it pulled around and landed back on the dock with about 25 WEGUs. Also the continuing Palm Warbler in the myopoum at the top of the pull-out hill.

This is in Lake Merced Park along Harding Road to the entrance of Harding Park golf course, north end of south arm of Lake Merced.

Cheers, Peter



Possible Black-tailed Gull Lake Merced Boathouse

Peter Pyle
 

Just getting a quick word out. It's a second-cycle bird with a big long bill - thought it was a deform-billed CAGU but now that I'm looking at my photos the darker back and tail pattern may point more to Black-tailed. Will post photos to eBird. It was on the western of the three docks, the wide trex one. I flushed it to get flight shots but it pulled around and landed back on the dock with about 25 WEGUs. Also the continuing Palm Warbler in the myopoum at the top of the pull-out hill.

This is in Lake Merced Park along Harding Road to the entrance of Harding Park golf course, north end of south arm of Lake Merced.

Cheers, Peter


Mt. D 5.3.2019

 

Birder Mount Davidson with Oscar "Young Boss" Moss this morning. Most notable were:

adult male RUFOUS HUMMINGBIRD coming repeatedly to the blooming Sticky Monkey above the trail X/fence

a getting late RUBY-CROWNED KINGLET chattering at the summit.

Bird on,

Dominik Mosur
San Francisco