Hayward Shoreline today (Hermit Warbler)


I birded Winton Avenue from 10:15-11 today.

Most interesting item was right when I got out of the car--a Hermit Warbler in the last tree on the right of the parking lot (closest to the lovely outhouse): had a couple of partial views, but clearly yellow face and black chin, although never a clear look at the body. Then it was gone and not refindable.

Western Tanager
Warbling Vireo
Allen's H (several, one in a turf battle with an Anna's)
Anna's H
White Tailed Kite (circled a couple of times and was calling)
WC Sparrow

Jogged over to the marsh afterwards, hoping for the Black Terns. I first looked from the Least Tern sign (thanks for the landmark) and was unsuccessful, went around to the most western or southwestern viewpoint, where I clearly saw 1 Black Skimmer "skimming" the water in the distance almost as far as what I'll call the breakwater that seems to go all the way across the pond. I'll call this the southeastern end of the pond.

Went back to the Least Tern sign, and was very patient. Eventually I thought I saw 1 Black Tern circle and return to the far island. I wouldn't stake my life on it, I had no scope and it was pretty far away. Although I honestly can't think of a good alternative. Guess I'll have to invest in a scope at some point.

On the jog back, I saw a flock of about 40 White Pelicans heading south (I had seen a lone one earlier).

Jay Dodge,

Coyote Hills Regional Park (5/13)

bdisme51 <bdisme51@...>

I birded the trees around the Visitor Center and Hoot Hollow this morning between 8 and 10:15 noting the following:

3 Vaux's Swifts

1 Yellow Warbler

1 Orange-crowned Warbler

1 Warbling Vireo

2 Western Tanagers

1 Black-headed Grosbeak

1 Ash-throated Flycatcher

1 Ruby-crowned Kinglet

many Swainson's Thrushes

Bob Dunn
San Leandro

Hayward Shoreline (5/13)

bdisme51 <bdisme51@...>

I birded the trees around the parking lot at Winton Avenue this morning between 10:30 to 11:15. I found the following:

2 Western Tanagers

2 Warbling Vireos

1 Pacific-sloped Flycatcher

1 Wilson's Warbler

2 Swainson's Thrushes

Bob Dunn
San Leandro

Hayward Shoreline (5/13)

Bob Richmond

Today at the shoreline -

Merlin - 1 is the latest record I have for the shoreline. The previous late date was 5-2-07.

Perigrine Falcon - 2 over Ora Loma Marsh. This is the first time I have seen 2 in May at the shoreline.

Black Tern - 3 over Hayward Marsh, where up to 12 have been seen this week.

Black Skimmer - 2 in Hayward Marsh.

Ash-throated Flycatcher - 1 along Sulfur Creek. They are usually seen in most springs at the shoreline.

Western Kingbird - 1 along Sulfur Creek near the railroad tracks is only the second one I have seen at the shoreline this spring.

Swainson's Thrush - 12 (est). Most were at Winton Ave.

Hutton's Vireo - 1 in the trees along Frank's Dump East. 4th May record I have for the shoreline. 1st May record in 11 years.

Western Tanager - 2 or 3 males. 1 at Winton Ave., 1 in the trees across Winton Ave. from the Park Office, 1 possibily in the trees along Frank's Dump East.

Black-headed Grosbeak - 1 male in the trees along Frank's Dump East.

Golden-crowned Sparrow - 1 along the trail leading to Cogswell Marsh, near the first pond on your left. I only have 3 later spring records at the shoreline.


Hayward skimmers

Cal Walters

Does anyone understand the skimmer behavior pattern as it relates to when they leave the island? Each time I have been there they have been resting. I was wondering if there was a timing pattern that I likely see them in flight? Is it based on the sun or tide or is there any reasonable predictability to it?

Cal Walters

Hayward Shoreline (5/12)

Bob Richmond

Today at the shoreline -

Peregrine Falcon  - 1 flying over Winton Ave.

Black Tern - 3 seen in Hayward Marsh from next to the Least Tern sign.

Black Skimmer - 2 seen in Hayward Marsh from next to the Least Tern sign.

Western Wood-pewee - 1 at Winton Ave. is the first I have seen here this spring.

Warbling Vireo - 1 at Winton Ave. may be the same bird as yesterday.

Swainson's Thrush - 1 at Winton Ave. and 1 in the trees across Winton Ave. from the Park Office.

Yellow Warbler - 1 at Winton Ave. may be the same bird as yesterday.

MacGillivray's Warbler - 1 in the trees across Winton Ave. from the Park Office.

Western Tanager - 1 male at Winton Ave. may be the same bird as yesterday.

Bullock's Oriole - 1 in the trees across Winton Ave. from the Park Office.


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Black-headed Grosbeak and Swainson's Thrush, Antioch

Paul Schorr

This morning we enjoyed the melodious song of a male Black-headed Grosbeak, and then had the opportunities throughout the day to watch it come to our feeders as well as drink from the dripper at the bird bath. It was accompanied by a first summer male. During our observations, a Swainson's Thrush also appeared on the fence.

Good birding,

Paul and Nancy Schorr

Continuing Great Blue nesting. Bald Eagle

Nancy Mix

2 active nests at Lake Herman, Benicia. One nest w/3 chicks about 1/2 grown. Upper nest w/ 2 or more new chicks. Osprey in tree eating.  Dbl crested cormorants also. While walking the dam back to the car, Nancy noticed the Osprey looking up. The Bald Eagle was making a fly-by over the lake..nice treat. Jerry & Nancy Mix

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Hayward Shoreline (5/11)

Bob Richmond

Seen at the shoreline from a little after 11 to about 12:30 -

Bank Swallow - 1 on the trail going to Cogswell Marsh. It was with the many Cliff Swallows.

Warbling Vireo - 1 at Winton Ave.

Yellow Warbler - 1 at Winton Ave. is the first I have seen here this spring. Bob Dunn hade one at least 1 1/2 weeks ago.

Western Tanager - 2 at Winton Ave.


Black Terns at Cogswell Marsh, Hayward Regional Shoreline

Patricia Bacchetti

This morning at 10 AM, 6 Black Terns flew up from behind the furthest island in Cogswell Marsh, circled the islands for about 5 minutes, then flew off together to the north. All 6 were breeding plumage adults. The 2 Black Skimmers were also present on the island; 2 Ruddy Turnstones were on the rocks at Johnson's Landing; and a Great-tailed Grackle was on the furthest island. Thanks to Bob Richmond for the tip about the best place to set up the scope.

From the Hayward Shoring Interpretive Center, take the East Bay Trail over the first bridge and keep bearing to the right, to the Least Tern sign at the locked gate. This is the SE corner of the loop trail. The islands can be scoped from that point. A map of Hayward Regional Shoreline is available on the net at the EBRPD website.

Good birding,

Pat Bacchetti

Mother's Day siskin <owlycat@...>

I had already decided that I would not see any pine siskins this seasons but on Sunday there was a single bird at my sunflower chip tube feeder. I was hoping I hadn't misidentified a lesser goldfinch so hoped for another sighting. Well, yesterday I saw the bird on my front deck getting seeds from under the hanging feeder. I assume it is on its way to its summer hangout. I live in Montclair just below Skyline Blvd.

Susan Russell

W Tanagers


There must be quite a wave of Western Tanager moving through. In a short
walk this morning to my neighborhood park I detected four of them. And this
is not prime habitat.

Rusty Scalf

Sunol Regional Park 5/10

Steve Taylor

On an organized trip today we encountered many birds some of which included:

Acorn Woodpeckers by the dozen

Ash-throated Flycatcher

Red-shouldered hawks including one sitting on a nest

Bullock's Oriole

Western Tanager

California Towhee

Spotted Towhee


Western Wood-Pewee

Yellow Warbler

Swallow's again by the dozen


House Finch

White-breasted Nuthatch

It was a good trip lead by an East Bay Park Ranger and I would encourage
everyone to go on these trips sponsored by the East Bay Regional Park


San Ramon

Re: Oak Titmouse Nest in a Dogpark

Rod Thornton <sfbayrodt@...>

Editing error, sorry. That was an "Oak Titmouse" nest sighting at Hap Magee Park. In my previous msg I contradicted myself.

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Hayward Shoreline today

Lori Arthur <loriarthur61@...>

Hi everybody. This morning I birded Hayward Shoreline, starting off from the Interp Center and going to the ponds near Cogswell Marsh, which were alive with birds. Most numerous were Forster's Terns, but, even with lots of searching, I couldn't find any Common. At least 2 Black Skimmers with the terns on one of the islands, and a few Black and Least Terns were also present, but difficult to pick out between the vast numbers of Forster's and equal numbers of Cliff Swallows. 3 fly-over Caspian Terns, but none at the ponds. Ducks included Gadwall, Ruddy, Mallard, and at least one of the scaup. Very few shorebirds, but I did get good looks at fly-by Dunlins. Large numbers of distant, breeding-plumaged Red-necked Phalaropes were on the far end of the pond.

At one point, most of the Forster's took off at once, rousting up the Skimmers, which sailed around and showed off their all-black uppersides and bright bills. On the way out, I met Judith Dunham, who went on to get better looks at the sam 
e birds in worse weather.-- Noah Arthur, Oakland

Oak Titmouse Nest in a Dogpark

sfbayrodt <sfbayrodt@...>

On Sunday, we took our dogs out to Hap Magee Ranch Park (between
Danville & Alamo). I was happily surprised to discover that Oak Titmouse
were nesting inside the dog park (for large dogs). There's an tree (Oak,
how appropriate), right in front of the gate (inside the dogpark) as you

There's a large gash on the tree. On the upper end of the gash is a hole
that's difficult to spot. While I watched daddy towhee flying down to it
repeatedly (apparently feeding the babies), I figured there was a nest
there. But couldn't see the tiny hole - until the mother stuck her head
out for a moment.

Even though the tree gash is in a can't miss spot, the nest itself is
very well hidden. Curiously, the towhees didn't seem concerned that
they were in such a busy spot--perhaps because the dogs & people all
seemed oblivious. The hole was only (approx.) 5 feet off the ground.
However as strong as many dogs are, I don't think any could easily get
to the nest, due to the tree's large size & structure.

Rod Thornton

Sunol Regional Wilderness - 5/10/10

Eric Pilotte

I made a visit to the Sunol Regional Wilderness this morning that included a quick hike near the visitor's center (pre-rain) and a drive up Welch Creek Road in the drizzle. Other than Swainson's Thrushes, migrants weren't very plentiful. However, the breeding birds of the area were singing in all their glory. Highlights included:
- 16 Swainson's Thrushes (10 of these were scattered along the pavement of Welch Creek Road)
- 4 Cassin's Vireos
- 5 Hairy Woodpeckers at various locations making lots of noise
- 4 Lazuli Buntings
- Only 2 Western Tanagers :(
- 6 Acorn Woodpeckers standing on the pavement
- No Wood Ducks near the footbridge of the visitor center, but 1 female Common Merganser there calling repeatedly (young nearby?)

Eric Pilotte
Benicia, CA

Black Terns and Skimmers Continue at Hayward Shoreline

Judith Dunham

I spent a couple hours out at the shoreline, from around 11 a.m. to just before 1 p.m. I arrived at the Interpretive Center in time for the fierce wind and succession of rain squalls. In many ways, the dramatic skies and weather were beautiful and enjoyable.

As I walked down the trail toward the best viewing spot for seeing the tern islands, I ran into Noah Arthur from Oakland, who was leaving and pointed out the presence of two BLACK SKIMMERS. From time to time, the dozens of Forster's Terns lifted off the islands and circled about. Finally, after being buffeted relentlessly by the wind, I spotted two BLACK TERNS. The birds flew about and then landed on an island apart from those occupied by the Forster's.

In the easternmost pond, dozens of Red-necked Phalaropes were bobbing in the roiling water. Among the other birds in the area were many American Avocets, Black-necked Stilts, and Gadwalls. Flocks of Marbled Godwits, Dunlins, Willets, and small peeps wheeled about in the wind.

I recently outfitted my scope with a backpack attachment, especially practical for long hikes. Today, I found another handy application. Using the waist strap, I lashed the tripod to one leg. This seemed the best way to keep both me and the scope upright.

Judith Dunham
Berkeley, CA

For directions to the Black Tern location, see Bob Richmond's 5/8 posting of the first sighting of the skimmers and terns.

Re: Unidentified Bird in Mitchell Canyon

Ted Robertson

Did you rule out Spotted Towhee? A bird very common to that habitat
with markings that you describe.
--Ted R.--

On May 10, 2010, at 11:49 AM, JimRoethe@... wrote:

On Friday, I hiked up Mitchell Canyon and turned up White Canyon. Just
short of a mile up White Canyon, almost to where the trail opens up to
grassland, I saw a bird that I have been trying to identify. To the
left of
the trail were the remnants of the creek and live oaks and to the
right were
a few brushy trees and the typical scrub that flank much of Mt.
Diablo. I
got a good look at the bird, but only for a couple of seconds.

The bird had a very dark back, head and throat (almost black).
Wings were
also black with white wing bars. The breast and belly were brick
red/orange (similar color to that of a Black headed Grosbeak) and
the line between
the breast and the throat was very sharp. The red/orange did not
appear to
extend into the scapular or back area. Just a very dark bird with
wing bars and a red/orange breast and belly. Bird was probably smaller
than a Grosbeak. The bill was dark, clearly not a Grosbeak and
larger than a warbler, but I didn't get a great look at the bill.

Could this have been an Orchard Oriole?



Jim Roethe
(925) 254-2190

Ted Robertson
Environmental Programs Director
Phone: (510) 642-4087
Fax: (510) 642-1055

Lawrence Hall of Science
University of California
Berkeley, CA 94720-5200


Olive-sided Flycatcher

John Harris

An Olive-sided Flycatcher is singing this morning at Mills College, in Oakland. FOS on campus for me.
John Harris