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Lerp-infested eucalyptus in the east bay?

M
 

Anyone aware of large groves of eucalyptus infested with lerp psyllid insects in the east bay that are attracting large numbers of birds right now? These are known bird magnets in other areas of the state. A quick search of the East Bay Birds archive didn't return any results regarding lerp-infested eucs in prior years as a potential guide for where to look.

This came to mind while browsing eBird reports of Yellow Warbler in the area and noting good numbers at Ellis Lake Park in Concord by Albert Linkowski and others. Often 10+ are reported per outing during September, which seems high given the relatively small size of the park. Photos on eBird show yellow and other warblers among lerp-infested eucs at the park, so I assume this is part of the story, though there are also cottonwoods at the park which are probably part of the attraction too. I've explored other euc groves in central Contra Costa but have noticed very few lerps, so I'm curious if others are aware of more lerpy groves.

Thanks,
Michael Strom
Concord


Re: FOS White Crown's

judisierra
 

I didn't notice any lack of Kinglets last winter. So it's probably the first. They forage in the lower branches of trees and shrubs according to Cornell and my observations. Looking at ebird histogram for frequency it looks like a small difference between 2019 and 2020.
https://ebird.org/barchart?byr=2019&eyr=2020&bmo=1&emo=12&r=US-CA-013&spp=ruckin&separateYears=true

Judi Sierra


On Saturday, September 18, 2021, 11:54:06 AM PDT, W Hudson <wllm2@...> wrote:


Same delight this morning in northeast Orinda.  Yesterday a Black-throated Gray Warbler passing through. 

Hoping for return of Ruby-crowned Kinglets; last year there were none after hearing the "typewriter" in every live oak during the winter for as long as I have paid attention.  Maybe because my neighborhood extensively removed vegetation up to 10' high to lessen wildfire risk last summer and fall, and maybe due to last year's fires in the Sierras (their breeding grounds?) and smoke--anyone else notice a similar absence?

William Hudson

On 9/18/2021 10:39 AM, Jackie Bobrosky wrote:
Thrilled to see a small group of White Crowned Sparrows in my backyard this morning.  Very busy corner in my world with Downy, Nuttall's, Acorn WP, White breasted Nuthatch, Bushtits........but where are those warblers?  I'm waiting....

Happy Birding from Martinez, Ca
Jackie Bobrosky





      




Re: FOS White Crown's

W Hudson
 

Same delight this morning in northeast Orinda.  Yesterday a Black-throated Gray Warbler passing through. 

Hoping for return of Ruby-crowned Kinglets; last year there were none after hearing the "typewriter" in every live oak during the winter for as long as I have paid attention.  Maybe because my neighborhood extensively removed vegetation up to 10' high to lessen wildfire risk last summer and fall, and maybe due to last year's fires in the Sierras (their breeding grounds?) and smoke--anyone else notice a similar absence?

William Hudson

On 9/18/2021 10:39 AM, Jackie Bobrosky wrote:
Thrilled to see a small group of White Crowned Sparrows in my backyard this morning.  Very busy corner in my world with Downy, Nuttall's, Acorn WP, White breasted Nuthatch, Bushtits........but where are those warblers?  I'm waiting....

Happy Birding from Martinez, Ca
Jackie Bobrosky








Saturday Sept 18 in Heather Farm Park

rosita94598
 

It finally happened, David Kent and finally saw a couple of White-crowned Sparrows.  The were with at least many Lesser Goldfinches and House Finches in the community garden.  Also seen today were Yellow Warblers, White-breasted Nuthatches, four of the common waders, Kingfishers and two young Wood Ducks.  Dave and I do not always see the same things, as we walk different directions around the large, mostly natural pond. 

His checklist is here:  https://ebird.org/checklist/S94822856

Hugh B. Harvey
Walnut Creek


FOS White Crown's

Jackie Bobrosky
 

Thrilled to see a small group of White Crowned Sparrows in my backyard this morning.  Very busy corner in my world with Downy, Nuttall's, Acorn WP, White breasted Nuthatch, Bushtits........but where are those warblers?  I'm waiting....

Happy Birding from Martinez, Ca
Jackie Bobrosky





Apologies to all -- TEWA photo is Jack Haydens from Creekside Park

Sam Zuckerman
 

I owe a big apology to all, especially Jack Hayden. That photo of TEWA I thought was from Anderson Park was actually Jack Hayden's photo from Creekside Park. My bird at Anderson was a WAVI. I've corrected the checklist.
 
Sam Zuckerman
samzuckerman@...
510-375-3861


Misidentified Tennessee Warbler in Booker Anderson Park

Sam Zuckerman
 

 
On Sept. 11, I was birding Booker T. Anderson Park in Richmond early in the morning, when I thought I found a Tennessee Warbler in the willows along Baxter Creek. I took a photo, then lost the bird. I thought I found it again in the same location, took more photos, and became convinced that my bird was in fact a Warbling Vireo -- and so reported it on eBird. Now, the eBird reviewer suggests I have photos of two different birds, a TEWA and a WAVI. I'd be grateful for people to look at the photo of the birds now identified as TEWA and WAVI and see if they agree. Here's the checklist: https://ebird.org/checklist/S94508873. 
Birding never ceases to amaze! Thanks to all. Sam 


Wilson's Warblers - Antioch yard - 9/17

Paul Schorr
 

This morning we spotted a male and female Wilson’s Warbler in our yard foraging in the abutilon shrubs. Throughout the day, the male made several trips to our nearby bird bath, offering splendid views.

In addition, several Gulf Fritillary butterflies visited the milkweed and salvia flowers.

Happy birding and butterfly-spotting.

Paul Schorr
Antioch


9/17/21: Continuing Pacific Golden-plover at Hayward Shoreline, Frank’s Dump

Patricia Mahoney
 

Friday, 9/17/21: The Pacific Golden-plover continues with the Black-bellied Plover flock at Frank’s Dump’s mostly dry salt pond. High tide was at 10:38 AM. Groups of plovers flew around and landed at Frank’s Dump around 9:45 AM. The Pacific Golden-plover was among them as were two Ruddy Turnstones. A Caspian Tern joined the flock briefly. When the sun came out the Pacific Golden-plover shone more golden.

I met Ron and Nancy Overholtz at the W. Winton entrance at 7:30 AM and we walked out on the paved SF Bay trail under cloudy skies. The Hayward Landing water’s edge was busy with foraging shorebirds: many Willets, some Marbled Godwits and Long-billed Curlews… farther north, many Black-bellied Plovers foraged. Waves of Least Sandpipers and Western Sandpipers flew in, landed or moved farther south. Two Snowy Plovers were on the beach- always a delight!

Pat Mahoney
Hayward


On Sep 11, 2021, at 8:27 PM, Maureen Lahiff via groups.io <MLahiff@...> wrote:

At Frank’s Dump along Hayward Shoreline north of Hayward Landing.

Pacific Golden-plover Sat afternoon, seen well around 3:30 near high tiide, among many Black-bellied Plovers.  Standing up by itself for clear views.

Very little water in Frank’s Dump, so Marbled Godwits and Willets were roosting in Ora Loma Marsh to the north.

GGAS field trip.

Maureen Lahiff
Oakland


Richmond Birds

Sheila Dickie
 

Yesterday September 16 at pt Pinole Regional Shoreline Park there were White crowned Sparrows (3) on the lower portion of Owl Alley and one Yellow rumped Warbler at the dry pond off Owl Alley (looked like a first winter bird). A Red Shouldered Hawk was in the eucalyptus trees near the Whittell Marsh. 

Garden: First White crowned Sparrow showed up at bird bath on September 7. Single and double sightings since in the holly tree before being chased out by Northern Mockingbirds (2).

Sheila Dickie
Richmond


Willow Flycatcher - Antioch yard - 9/16

Paul Schorr
 

Late this afternoon while I was checking out birds at one of our bird baths, I spotted a Willow Flycatcher that was bathing. We have only had this species once before in our yard and that was in 2013.

Good birding,

Paul Schorr
Antioch


Thursday in Heather Farm Park, Walnut Creek

rosita94598
 

Despite waking at 4:30 AM and knowing I will attend a Zoom meeting at 1 PM, I had a very enjoyable morning in the park.  I had my first Yellow-rumped Warbler of the fall and was able to show it to Ted Robertson who came along later.  A Yellow Warbler was in the same location near the eucalyptus trees at the south end of the large, mostly natural pond.  Bushtits galore were around, CA Towhees, WB Nuthatches, a couple of Great and one Snowy Egret, two Black-crowned Night-Herons and the Acorn Woodpecker called near the entrance to the private Seven Hills School.

Hugh B Harvey
Walnut Creek


FOS White-crowned Sparrow in Livermore

Jaan Lepson
 

I heard at least two White-crowns singing along the dry arroyo at Robertson Park in Livermore this morning.

I have mixed feelings - I love their songs, but they are a real nuisance in our yard, pecking at and pulling up our little succulents.

Good birding!
Jaan Lepson
Livermore


FOS White-crowned Sparrow - Antioch yard - 9/15/2021

Paul Schorr
 

This afternoon we had our FOS White-crowned Sparrow appear in our yard. Yesterday, we had a Yellow Warbler gleaning insects from shrubs and American Goldfinches are returning to the feeders.

Good birding,

Paul Schorr
Antioch


Resolving the County Line?

Ethan Monk
 

Hi All,

For the last couple of days, I have been on and off the phone with the Contra Costa County Assessor's Office trying to clear up this county line issue. But first, thanks to Aaron (I guess? sure did open a can of worms) for calling my bluff on my original post. I looked at the online Contra Costa GIS map, saw the line was straight and cut through the riparian corridor, and thought "oh, the Caltrans map is wrong, therefore birders have been right all along."

Anyway, the conclusion is that the county line shown on the Contra Costa and Alameda GIS parcel maps is the correct, definitive county line. The Caltrans Map and USGS topo maps are close, but incorrect. And yes, the county line does not follow the path of the creek. The county line was drawn in the 1800s as the boundary between two Spanish landgrants: Rancho San Antiono and Rancho San Pablo. The line was drawn to bisect El Cerrito Creek, but where Creekside Park currently exists, the creek used to have a large estuary. So the line was drawn down the middle of the creek to where it reached its estuary (at about Carlson Blvd.) and then the line was drawn through the estuary from where the creek entered the estuary to a large shellmound on the estuary's Western edge. Years later, the estuary was destroyed and the creek channelized, but the county line remained unchanged. And the creek's manmade channel was not built to follow the county line. Although it is close. Today with the creek developed on both sides, the destruction of the estuary and the channelizing of the creek, it leaves some oddities like buildings in Albany that have some of their parking lot in El Cerrito and vice versa but that is the official county line as used by both counties!

The assessor’s office informed me that the park was never officially surveyed so the line shown online could be slightly off, but without hiring an official land surveyor there would be no way to find the exact line on the ground. I was also told that if the line shown on the County maintained GIS maps was wrong, it would likely be off by a very small amount, at very most misplotted by a foot or two, but likely not even by this much. And that being said, Alameda and Contra Costa County GIS Parcel maps approximate the county line in the exact same place, so that is probably extremely close to or is the real county line, and is definitely the absolute best we can do as birders.

So to approximate the county line in the park: West of the Eastern edge of the basketball courts the entire park is in Contra Costa. From the dead end to Carlson Blvd. (so where most have seen the Tennessee) the county line runs pretty much right down the middle of the creek. Between the dead end and the basketball courts, the county line falls between the middle of the creek and the top of the creek’s southern bank. So to see a bird in Alameda in this section, it seems you would have to see it over the earthen bank on the creek’s South side, actually out from above the water.

This means a couple things: Most easily, how people have been deciding which county the Tennessee is in holds true, as the Tennessee has rarely been seen West of the dead end, so the creek is in fact split down the middle. Secondly, where I saw the Mourning Warbler in 2019 was well West of where the black fence starts on the East edge of the basketball courts, putting it entirely in Contra Costa. It might be a tough call to say that bird was ever in Alameda, but I know it did move a bit.

Anyway, best of September,
Ethan Monk


FOS yard White-crowned sparrow

judisierra
 

Seen in in the bird bath today. There was a yellow warbler later that attempted a bath but was scared off by nearby house construction banging and the back neighbor's barking dog.

Judi Sierra - North Oakland


Vollmer Peak midday Tuesday Sept. 14

rosita94598
 

At least a half-dozen birders watched the Green-tailed Towhee pretty much as long as they wanted today between 11:30 and 12:30.  It spent a lot of time to the right of the tree located to the right of the bench at the top of the hill.  While I was still there, two Western Tanagers played hard to see because they were in the tree with the sun behind them.

A female Hermit Warbler was reported on the Vollmer Peak trail, so a couple of us wandered that direction.  Though we found Wrentits and Fox Sparrows, the warbler was not seen by us.

When I started downhill to the parking lot, the Green-tailed Towhee was even farther to the right of the bench, foraging to the right of the cyclone fence gate around a tower there.  We walked away from it.

What a great bird.  Thanks to all who report it.

Hugh B. Harvey
Walnut Creek


Monday morning birds

rosita94598
 

A Red-shouldered Hawk called near our house very early today.  It almost caught me unaware, since we have not heard it for a while.

A bright Yellow Warbler was in Heather Farm Park, along with four of the five common herons.  I heard that another birder had all five.

Two of the young Wood Ducks were seen on the island, but none of my birding buddies was around to let them know.

Since Thursday morning I have seen twice and heard twice an Acorn Woodpecker between the big pond and the equestrian area.  They were common in the park until the middle and south ball fields were built 20 years ago.  There is a family located in the south Cherry Lane/Seven Hills Ranch Road/Walnut Boulevard area, so maybe there is some expansion of territory.  It could also be an expansion for acorn gathering, as some have commented on the lower numbers of acorns this year.

Hugh B. Harvey
Walnut Creek


Re: Vollmer Peak continuing Green-tailed Towhee + MacGillivray's Warbler

Horacio & Mona Mena
 

The green-tailed towee was present in the location described (bench on the Seaview Tail) at 1pm on Sunday 11/12.
The bird was on the downhill side and got to about 5 ft of us near the paved rd. 

Mona and Horacio Mena


GT Towhee Sept 12

Dave Weber
 

Green-tailed Towhee continues this morning Sept 12 on the Sea View Trail at Tilden. Vicinity of the driveway and gate to two towers (one unused), both sides of trail. Earlier closer to the bench. 


Dave Weber,
Milpitas
By phone

341 - 360 of 15027