Date   
Heather Farm Wednesday evening

rosita94598
 

I took a walk for exercise around the park this evening and at 7:40 PM, noticed that the (a) Caspian tern was fishing over the large, mostly natural pond.  When I finished my speed walk (it is relative), the tern was still hunting the pond at 8:20. 

Heather Farm is in the Ygnacio Valley of Walnut creek.
Hugh B. HarveyWalnut Creek

Bradford Island Access

Jim Chiropolos
 

Birding Bradford island is a very sensitive access issue. The ferry and island levees have very little capacity for non-island residents. The island also contains working ranches that use the levees - the sensitive rancher is concerned with people possibly damaging his operation while his stock use the levees for cattle drives.I think that if too many birders use the island - birders (and other people) - will get banned due to the concerns above. Its a neat place - but if you bird it, it should not be chase rarities but to enjoy a more "intact" delta ecosystem. Due to access issues, it is a place that probably should not be posted on the listservs and on ebird lists rare birds should be hidden, because of the extreme sensitivity of access issues and to avoid potential confrontation with residents if too many people are present at once and stress its infrastructure. An occasional small birding group is probably OK - but that formula changes when a rare bird is present. Bans have occurred at other delta locations for similar reasons.
Jim Chiropolos, Orinda

Bradford Island Access 2

Jim Chiropolos
 

I was just sent this by another ebird user from the Reclamation District Website:

"All property on Bradford Island is owned by private individuals and by agencies for a specific use. Any unauthorized access on any land on Bradford Island may be a trespass and could result in criminal or civil penalties pursuant to California Penal Code Section 602 or Civil Code Section 1708.8."

Jim Chiropolos, Orinda

Re: Bradford Island Access 2

tracy_farrington
 

Sensible advise, Jim. And fundamentally congruent with good birding ethics.
Tracy FarringtonWalnut Creek

On Thursday, June 6, 2019, 10:34:01 AM PDT, Jim Chiropolos <jnc@...> wrote:

I was just sent this by another ebird user from the Reclamation District Website:

"All property on Bradford Island is owned by private individuals and by agencies for a specific use. Any unauthorized access on any land on Bradford Island may be a trespass and could result in criminal or civil penalties pursuant to California Penal Code Section 602 or Civil Code Section 1708.8."

Jim Chiropolos, Orinda

Wrentit at Berkeley's Aquatic Park.

John H. Maurer
 

I saw a Wrentit in Aquatic Park at about 1:20 this afternoon. It was on the east side of the big pond, about halfway between the south parking lot and the fenced in play structure(s). Other than that, the usual suspects, except for a Turkey Vulture. This was somewhat unusual, since it was the third sighting in that general area in the last four days. Monday one. Tuesday two. None Wednesday, but one today. They were all over the frontage road and bay shore path between University and Emery Point. The one today was soaring west across the freeway, and the frontage road is just the other side of the freeway.

No smart phone, so I couldn't post it until I got home to my computer. And no smart phone, so I can't give you the coordinates.

John

Re: Possible Orchard Oriole at Coyote Hills

Bruce Mast
 

That bill looks rather short to me for a Hooded Oriole. I see on
iNaturalist that the hypothesis has been offered that the bird is a
fledgling Hooded, thus shorter billed and brighter wingbars. It's early
June--was the bird by itself? In my neighborhood, the Hooded Oriole family
travels around together as a loose flock until late summer. I haven't
noticed any fledglings yet.

Bruce Mast
Oakland

On Sun, Jun 2, 2019 at 10:04 PM Teale Fristoe <fristoe@...> wrote:

Today a friend and I went on a long walk through Coyote Hills. Near the
junction of Crandall Creek Trail and Alameda Creek Trail, we noticed a
small yellow bird on a power line. My friend posted a photo of the bird to
iNaturalist: https://www.inaturalist.org/observations/26304442

Is this an expected Hooded Oriole, or could it be a female Orchard Oriole?
It appears to be uniformly yellow, lacking grayish flanks, and the white
wing bars look fairly defined.

Note: As I was writing this email, some folks on iNat decided the bird is a
Bullock's Oriole, which seems wrong to me given the clearly yellow belly. I
welcome any thoughts you have on the id.

Happy birding,
Teale Fristoe
Berkeley



Re: Possible Orchard Oriole at Coyote Hills

Teale Fristoe
 

The bird was by itself. I also thought the bill looked small, but I never
know if I should trust myself on those kinds of subjective judgements.
Everyone who responded to my post privately (thanks again!) said Hooded
Oriole, and a couple of folks with more experience than me suggested that
it was a juvenile, so I figured that was the correct id.

Teale Fristoe
Berkeley

On Sun, Jun 9, 2019 at 8:38 AM Bruce Mast <cathrasher4@...> wrote:

That bill looks rather short to me for a Hooded Oriole. I see on
iNaturalist that the hypothesis has been offered that the bird is a
fledgling Hooded, thus shorter billed and brighter wingbars. It's early
June--was the bird by itself? In my neighborhood, the Hooded Oriole family
travels around together as a loose flock until late summer. I haven't
noticed any fledglings yet.

Bruce Mast
Oakland

On Sun, Jun 2, 2019 at 10:04 PM Teale Fristoe <fristoe@...> wrote:

Today a friend and I went on a long walk through Coyote Hills. Near the
junction of Crandall Creek Trail and Alameda Creek Trail, we noticed a
small yellow bird on a power line. My friend posted a photo of the bird to
iNaturalist: https://www.inaturalist.org/observations/26304442

Is this an expected Hooded Oriole, or could it be a female Orchard Oriole?
It appears to be uniformly yellow, lacking grayish flanks, and the white
wing bars look fairly defined.

Note: As I was writing this email, some folks on iNat decided the bird is
a
Bullock's Oriole, which seems wrong to me given the clearly yellow belly.
I
welcome any thoughts you have on the id.

Happy birding,
Teale Fristoe
Berkeley



Re: Possible Orchard Oriole at Coyote Hills

Bruce Mast
 

Bills can also look shorter in photos when head angle is not straight
profile. Hooded is definitely the conservative ID in the absence of more
photos or diagnostic field description.

Bruce

On Sun, Jun 9, 2019, 9:43 AM Teale Fristoe <fristoe@...> wrote:

The bird was by itself. I also thought the bill looked small, but I never
know if I should trust myself on those kinds of subjective judgements.
Everyone who responded to my post privately (thanks again!) said Hooded
Oriole, and a couple of folks with more experience than me suggested that
it was a juvenile, so I figured that was the correct id.

Teale Fristoe
Berkeley

On Sun, Jun 9, 2019 at 8:38 AM Bruce Mast <cathrasher4@...> wrote:

That bill looks rather short to me for a Hooded Oriole. I see on
iNaturalist that the hypothesis has been offered that the bird is a
fledgling Hooded, thus shorter billed and brighter wingbars. It's early
June--was the bird by itself? In my neighborhood, the Hooded Oriole family
travels around together as a loose flock until late summer. I haven't
noticed any fledglings yet.

Bruce Mast
Oakland

On Sun, Jun 2, 2019 at 10:04 PM Teale Fristoe <fristoe@...> wrote:

Today a friend and I went on a long walk through Coyote Hills. Near the
junction of Crandall Creek Trail and Alameda Creek Trail, we noticed a
small yellow bird on a power line. My friend posted a photo of the bird
to
iNaturalist: https://www.inaturalist.org/observations/26304442

Is this an expected Hooded Oriole, or could it be a female Orchard
Oriole?
It appears to be uniformly yellow, lacking grayish flanks, and the white
wing bars look fairly defined.

Note: As I was writing this email, some folks on iNat decided the bird
is a
Bullock's Oriole, which seems wrong to me given the clearly yellow
belly. I
welcome any thoughts you have on the id.

Happy birding,
Teale Fristoe
Berkeley



GGAS First Friday Birdwalk, June 7 2019, Tilden Nature Area

Alan Kaplan
 

Friends!

Golden Gate Audubon Society First Friday Birdwalk
Tilden Nature Area, Contra Costa County, California, US
Jun 7, 2019, 8:30 AM - 11:30 AM

Golden Gate Audubon Society First Friday Birdwalk, June 7, 2019, Tilden Nature Area, a walk to Jewel Lake and back again. Today's theme was "Summer Complaints" (a "Mash Goes to Maine" reference), those birds that are our summer visitors, where they come from and when they arrive. Party of 38 observers included Honored Guest, Dave Quady, one of our long-time leaders and Christmas Count organizers. We saw 31 species; highlights were

American White Pelican (8) flying south parallel to the Berkeley Hills.
Nesting Warbling Vireo. See photo at eBird checklist listed below, thanks to Lee Friedman.
Olive-sided Flycatchers (at least 5) and Swainson’s Thrush (at least 5).

Details on Summer Visitors arrival dates and overwintering sites at the checklist.

View this checklist online at https://ebird.org/view/checklist/S57248717

Best of Birds!
Alan Kaplan

SAGE THRASHER: OAKLAND HILLS

Sylvia Sykora
 

A nice addition to my yard list (#101) after 30 years in the Oakland hills when the east winds blew a Sage Thrasher into the garden on June 9. Well seen from about 20' away, in profile and facing, as it walked around the courtyard for a minute or two before flying off. An unlikely habitat for the SATH, I thought, in an area of tall conifers on the west side of the hills at 1400', near Redwood Park. How likely a sighting might this be?

Sylvia Sykora
Oakland near Skyline and Castle

RB Merganser @ Albany mudflats

Fred Werner
 

An adult male Red-breasted Merganser swam across the Albany Mudflats
yesterday evening, shortly before sunset.

It was high tide, no mudflats exposed. Dozens of both Cliff and Northern
Rough-Winged Swallows and only a few other species. Full list here:
https://ebird.org/view/checklist/S57342841


- Fred Werner
Berkeley, CA

Black-chinned hummingbird near Pleasant Hill library

Susana dT
 

Seen June 13 and 14 by the trail that runs along Grayson creek, labeled EBMUD trail on google. I parked at the Pleasant Hill library, crossed Monticello Ave., walked on Oak Park Blvd, crossed the creek and turned left on the trail at the pedestrian crossing. The trail is straight but then it curves for no reason. The hummingbird was perched on a dead tree on the left where the trail gets straight again. Both days in the same tree. It flew across and joined another hummingbird. Thank you Alan Bade for introducing me to this nice birding spot.
photos here:
https://www.flickr.com/photos/166553264@N04/albums/72157709088299217

Sandwich Tern

Bob Richmond
 

Seen from the Least Tern sign at the Hayward Shoreline. It was on the NE island in the pond with the Least Tern nest island. This is a restricted area.Viewing is only possoble from the sign. Also it was with 7 Elegant Terns. 60 plus skimmers were around 
Bob

SANDWICH TERN continues at Hayward Shoreline

Bob Toleno
 

Currently giving distant but diagnostic views from the Least Tern sign for
Juli Chamberlin, Jerry Ting, Bob Dunn, and me. It's preening on the front
of the island in the northeast part of the main tern pond. Black legs, long
black bill with a pale yellow tip. North American lifer for Juli and me!

Bob Toleno
Hayward

Re: SANDWICH TERN continues at Hayward Shoreline

Bob Toleno
 

The bird just left the island and flew past us toward the bay, presumably
to feed. Good luck to anyone who tries! We also saw a Laughing Gull in
transitional plumage on the tern pond, probably the same individual that
has been seen the past three years around this time.

Bob Toleno
Hayward

On Sun, Jun 16, 2019 at 10:31 AM Bob Toleno <@birdnerdbob> wrote:

Currently giving distant but diagnostic views from the Least Tern sign for
Juli Chamberlin, Jerry Ting, Bob Dunn, and me. It's preening on the front
of the island in the northeast part of the main tern pond. Black legs, long
black bill with a pale yellow tip. North American lifer for Juli and me!

Bob Toleno
Hayward

Sandwich Tern (6/16/2019) - photos

Jerry Ting
 

As Bob Toleno stated in his previous posts, the Sandwich Tern reported by Bob Richmond and John Luther continued to be seen in the tern colony pond in Hayward Marsh that can be seen (using a scope) from the Least Tern sign and spent most of the time preening on the south side of the island (37.630029, -122.144366) on northeast of the Least Tern island. I have included 2 distant shots of the bird in my eBird report in which you can see the yellowish tip on the dark bill and dark legs.

https://ebird.org/view/checklist/S57431258

Happy Birding,
Jerry Ting
Fremont

Re: Sandwich Tern (6/16/2019) - photos

John Sterling
 

I received a text message from an expert who I totally trust who saw the bird and determined that it was a hybrid. I’ll let him comment but just wanted to get the word out. Several records in recent years in California have proven to be hybrids. I’m in China so I haven’t seen the bird.
John Sterling
530 908-3836
26 Palm Ave
Woodland, CA 95695

On Jun 17, 2019, at 10:26 AM, Jerry Ting via Groups.Io <jtnikon=yahoo.com@groups.io> wrote:

As Bob Toleno stated in his previous posts, the Sandwich Tern reported by Bob Richmond and John Luther continued to be seen in the tern colony pond in Hayward Marsh that can be seen (using a scope) from the Least Tern sign and spent most of the time preening on the south side of the island (37.630029, -122.144366) on northeast of the Least Tern island. I have included 2 distant shots of the bird in my eBird report in which you can see the yellowish tip on the dark bill and dark legs.

https://ebird.org/view/checklist/S57431258

Happy Birding,
Jerry Ting
Fremont



Re: [CALBIRDS] [EBB-Sightings] Sandwich Tern (6/16/2019) - photos

Alvaro Jaramillo
 

John
Before the hybrid hypothesis catches too much fire. I am convinced that these birds are dark billed Elegants. Dark on the bill in Elegant Terns is common, the rarity in these cases is the extent. They can be nearly all black, like this one I saw in 2013 here in Half Moon Bay:

https://www.flickr.com/photos/alvarojaramillo/9442203562/in/photolist-XsSNif-wSAYus-wnvJR7-fCuq4m-fo8utM-fonLa9-fdmzyT-fdmziP-fdmzr8-dUozc2-d75zfy-d75yGs-d75BBs-cRqARh-agA1zx-9VJghg

The hybrids that have been identified on Isla Rasa, Baja California to my eye are again just Elegants with dark on the bill. There are color photos in the paper:
http://www.marineornithology.org/PDF/40_1/40_1_25-29.pdf
They spot various birds with dark on the bill, and assume they are all backcrosses from some original hybridization some time back. But they did not see any Sandwich (Cabot's) Tern while they performed their study. Again, I do not think they were considering that these were merely a variation in Elegant Tern. The bill shapes of these birds are classic Elegant, no sign of the shorter and straighter bill of Sandwich.
So in summary, I do not think the current bird is a hybrid. I think it is a dark billed Elegant Tern.
Alvaro

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

-----Original Message-----
From: CALBIRDS@groups.io <CALBIRDS@groups.io> On Behalf Of John Sterling
Sent: Sunday, June 16, 2019 8:38 PM
To: jtnikon@...
Cc: EBB-Sightings@groups.io; calbirds@groups.io
Subject: Re: [CALBIRDS] [EBB-Sightings] Sandwich Tern (6/16/2019) - photos

I received a text message from an expert who I totally trust who saw the bird and determined that it was a hybrid. I’ll let him comment but just wanted to get the word out. Several records in recent years in California have proven to be hybrids. I’m in China so I haven’t seen the bird.
John Sterling
530 908-3836
26 Palm Ave
Woodland, CA 95695

On Jun 17, 2019, at 10:26 AM, Jerry Ting via Groups.Io <jtnikon=yahoo.com@groups.io> wrote:

As Bob Toleno stated in his previous posts, the Sandwich Tern reported by Bob Richmond and John Luther continued to be seen in the tern colony pond in Hayward Marsh that can be seen (using a scope) from the Least Tern sign and spent most of the time preening on the south side of the island (37.630029, -122.144366) on northeast of the Least Tern island. I have included 2 distant shots of the bird in my eBird report in which you can see the yellowish tip on the dark bill and dark legs.

https://ebird.org/view/checklist/S57431258

Happy Birding,
Jerry Ting
Fremont







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

Re: [CALBIRDS] [EBB-Sightings] Sandwich Tern (6/16/2019) - photos

John Sterling
 

Very good Alvaro. Thanks.
John Sterling
530 908-3836
26 Palm Ave
Woodland, CA 95695

On Jun 17, 2019, at 11:58 AM, Alvaro Jaramillo <chucao@...> wrote:

John
Before the hybrid hypothesis catches too much fire. I am convinced that these birds are dark billed Elegants. Dark on the bill in Elegant Terns is common, the rarity in these cases is the extent. They can be nearly all black, like this one I saw in 2013 here in Half Moon Bay:

https://www.flickr.com/photos/alvarojaramillo/9442203562/in/photolist-XsSNif-wSAYus-wnvJR7-fCuq4m-fo8utM-fonLa9-fdmzyT-fdmziP-fdmzr8-dUozc2-d75zfy-d75yGs-d75BBs-cRqARh-agA1zx-9VJghg

The hybrids that have been identified on Isla Rasa, Baja California to my eye are again just Elegants with dark on the bill. There are color photos in the paper:
http://www.marineornithology.org/PDF/40_1/40_1_25-29.pdf
They spot various birds with dark on the bill, and assume they are all backcrosses from some original hybridization some time back. But they did not see any Sandwich (Cabot's) Tern while they performed their study. Again, I do not think they were considering that these were merely a variation in Elegant Tern. The bill shapes of these birds are classic Elegant, no sign of the shorter and straighter bill of Sandwich.
So in summary, I do not think the current bird is a hybrid. I think it is a dark billed Elegant Tern.
Alvaro

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

-----Original Message-----
From: CALBIRDS@groups.io <CALBIRDS@groups.io> On Behalf Of John Sterling
Sent: Sunday, June 16, 2019 8:38 PM
To: jtnikon@...
Cc: EBB-Sightings@groups.io; calbirds@groups.io
Subject: Re: [CALBIRDS] [EBB-Sightings] Sandwich Tern (6/16/2019) - photos

I received a text message from an expert who I totally trust who saw the bird and determined that it was a hybrid. I’ll let him comment but just wanted to get the word out. Several records in recent years in California have proven to be hybrids. I’m in China so I haven’t seen the bird.
John Sterling
530 908-3836
26 Palm Ave
Woodland, CA 95695

On Jun 17, 2019, at 10:26 AM, Jerry Ting via Groups.Io <jtnikon=yahoo.com@groups.io> wrote:

As Bob Toleno stated in his previous posts, the Sandwich Tern reported by Bob Richmond and John Luther continued to be seen in the tern colony pond in Hayward Marsh that can be seen (using a scope) from the Least Tern sign and spent most of the time preening on the south side of the island (37.630029, -122.144366) on northeast of the Least Tern island. I have included 2 distant shots of the bird in my eBird report in which you can see the yellowish tip on the dark bill and dark legs.

https://ebird.org/view/checklist/S57431258

Happy Birding,
Jerry Ting
Fremont







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

Sandwich Tern

Mark Stephenson
 

I privately emailed the observers that saw the “Sandwich Tern” early today and let them know that a Hybrid/ dark billed elegant would be much more likely than an actual Sandwich Tern. Bob Toleno said it appeared that the yellow bled into the lower mandible further than typical which would point towards hybrid/dark billed elegant. Glad somebody else is on the same page as Lucas and I. (Elegant tern background).  Happy BirdingMark&Lucas Stephenson