Date   
Mitchell Canyon Calliope Hummingbirds 4/10

Teale Fristoe
 

Yesterday Phil Georgakakos and I had a great day exploring Mitchell Canyon on the northern side of Mt Diablo. We started by walking down the Mitchell Canyon Fire Road until it started heading uphill, then we backtracked to White Canyon, taking Red Road then Black Point Trail for maybe a quarter of a mile. On the way back to the parking lot we took Globe Lily Trail.

It was too early for globe lilies and many migrants, including most warblers, flycatchers, and bunting type birds. However we saw many Hammond's Flycatchers throughout the canyon and heard two Black-headed Grosbeaks. The highlight of the trip for me were a whopping 8 Calliope Hummingbirds, almost all males that were displaying and posing on exposed branches. We saw these birds in several locations along Red Road, Black Point Trail, and Globe Lily Trail.

We were unfortunately too late in the morning to hear Common Poorwills, but we did find the headless corpse of one on Red Road. Does anyone know what kind of predator would kill a bird like that and only take its head?

Our full checklist with a few pictures can be seen here: https://ebird.org/view/checklist/S54806350

Happy spring,
Teale Fristoe
Berkeley

Re: Mitchell Canyon Calliope Hummingbirds 4/10

Bev
 

Globe lilies have been out for 2 weeks, on their trail, but also on the main fire road.

Thank you for the bird info!

Bev

-----Original Message-----
From: Teale Fristoe <fristoe@...>
To: EBB-Sightings <EBB-Sightings@groups.io>
Sent: Thu, Apr 11, 2019 7:49 am
Subject: [EBB-Sightings] Mitchell Canyon Calliope Hummingbirds 4/10

Yesterday Phil Georgakakos and I had a great day exploring Mitchell Canyon on the northern side of Mt Diablo. We started by walking down the Mitchell Canyon Fire Road until it started heading uphill, then we backtracked to White Canyon, taking Red Road then Black Point Trail for maybe a quarter of a mile. On the way back to the parking lot we took Globe Lily Trail.

It was too early for globe lilies and many migrants, including most warblers, flycatchers, and bunting type birds. However we saw many Hammond's Flycatchers throughout the canyon and heard two Black-headed Grosbeaks. The highlight of the trip for me were a whopping 8 Calliope Hummingbirds, almost all males that were displaying and posing on exposed branches. We saw these birds in several locations along Red Road, Black Point Trail, and Globe Lily Trail.

We were unfortunately too late in the morning to hear Common Poorwills, but we did find the headless corpse of one on Red Road. Does anyone know what kind of predator would kill a bird like that and only take its head?

Our full checklist with a few pictures can be seen here: https://ebird.org/view/checklist/S54806350

Happy spring,
Teale Fristoe
Berkeley

Royal Tern Alameda

John Luther
 

Hi All,
While doing a bird survey at the Alameda Reserve, Alameda Point, Alameda I observed a single Royal Tern.  It was calling while flying over and by me at about 9:30 AM today April 11.  This area has no public access, but the bird could go north, south or west over or along the bay.  It was flying NW towards SF when last seen.  It had very white underwings with no large black area as seen on Caspian Terns also in the area.  The bill was orange red not the deep red of the Caspian Terns and the bill was thinner (but not as thin and long as an Elegant Tern) than the Caspian Terns.  The overall bird seemed less bulky "slimmer" than a Caspian.
Also seen in the area by the breakwater was a single Brant and 8 Brown Pelicans.  There are now over 200 Caspian Terns at their colony in the SF county portion of the Alameda Reserve. I looked for the Royal Tern in the colony area, but did not find it there.  
John LutherOakland

Northern Pygmy-Owl at Sunol Regional Park

Donald Lewis
 

Thursday, our small group had a glorious morning at Sunol regional park,
starting at the last parking area at 8am. We heard a NORTHERN PYGMY-OWL not
far past the bridge on the Ohlone Camp trail (the main road). Other
highlights of the 48 species seen were 2 WESTERN KINGBIRDS and 2 BULLOCK'S
ORIOLES on the way back near the cattle pond on the McCorkle trail. But
besides the birds, the wildflowers are spectacular, especially along the
Canyon View trail as we made a loop return from Little Yosemite to the
parking lot.



eBird list compiled by Judith Dunham at
https://ebird.org/shared?subID=UzU0ODQyNTQ2
<https://ebird.org/shared?subID=UzU0ODQyNTQ2&s=t> &s=t .



Don Lewis

Lafayette, CA

Mitchell Canyon Nashville Warblers, etc.

Derek
 

Following up on a couple other interesting posts this week on Mitchell
Canyon, I decided to make that my destination this morning and it
didn't disappoint. I set personal highs for both Nashville Warbler
(4) and Black-throated Gray Warbler (16). Other highlights were
Hammond's Flycatchers, Hermit Warblers, and a single Calliope
Hummingbird. The 6 mile hike focused mainly on Black Point Trail that
I took all the way around the mountain though it was too early for
Sage Sparrows on the west side. A one-mile stretch of that trail was
very productive early morning with warblers galore with many good
horizontal views.

This is the earliest in the migration I've ever birded Mitchell Canyon
and despite it being too early for some key species, I found the
activity level very high. And of course the wildflowers are added
bonus.

Link to Ebird post of 56 species seen:
https://ebird.org/view/checklist/S54919818

Derek Heins

April 14, 2019: Black Scoters Continue at Richmond Marina

Patricia Mahoney
 

Sunday, April 14, 5 PM: Two adult male Black Scoters continued in the corner of the Richmond Marina, close to the pedestrian path. They’re looking good and staying together: much snoozing, some preening, stretching and swimming... excellent binocular views. No vocalizations during my 20-minute visit (last stop on a great spring birding day!). The Black Scoters kept company with Surf Scoters, Western Grebes, a Clark’s Grebe, Horned Grebes and Coots. A male Surf Scoter dove and resurfaced with a whole mussel which it manipulated and then swallowed easily. Two Black Oystercatchers foraged along the edge of the rocks below the path.

I parked at Shimada Friendship Park and walked a block to the harbor corner; I spotted the Black Scoters from a half-block away:
Shimada Friendship Park
Marina Bay Pkwy & Peninsula Dr
Richmond, CA

Pat Mahoney
Hayward

Black-headed Grosbeak

mbstern2
 

FOS in our Lafayette yard yesterday. About 2 weeks after usual appearance over the years.
Maury Stern

Ballena Bay Terns

Bob Richmond
 

Terns seen this afternoon between 1:10 and 2:20 at Ballena Bay. Most were on the concrete breakwater.
2 Elegant Terns.1 Least Tern heard and then seen over SF Bay.135 Forsters Tern.
Bob RichmondAlameda

Re: UC Berkeley Peregrine Falcons - eggs warm enough?

Fred Werner
 

Is there a betting pool as to when folks think the Campanile Peregrines'
first egg will hatch? I'll place my bet on this Thursday, April 18,
4:50pm...

- Fred Werner
Berkeley, CA



On Mar 20, 2019, at 11:38 AM, Carolyn Arnold <carnold@...> wrote:

Thank you Anne! The second egg appeared sometime this morning, I think
just before 8 am!
The cam lets you go back up to 4 hours, and you can see the eggs at
8:00, 9:41, and 10:48, and 11:18.
It looks like dad came in soon after the egg was laid, and relieved mom
for an hour to go feed.
Since then, it’s been mom sitting…

With a 29-33 incubation period, that means hatching sometime starting
the week of April 15th..


On Mar 19, 2019, at 5:33 PM, Anne Krysiak <vakrysiak@...> wrote:

The Peregrine Family nesting on the Campanile has laid it's first egg
of 2019.
You can watch the nestcam at
https://www.youtube.com/watch?v=EaJuC-rxVAQ.
The outside camera is here: https://www.youtube.com/watch?v=S5BofDM7eAQ








Gray Flycatcher at Ardenwood

James
 

I found a Gray Flycatcher at Ardenwood this afternoon.  Plain drab Flycatcher with longer bill and tail than Hammond's.  No distinct eyering.  Was also dipping its tail like a Phoebe.  Near that trainyard.  Dropped pinNear Ardenwood Historic Farm, 34600 Ardenwood Blvd, Fremont, CA 94555https://maps.app.goo.gl/7X3Au I hope sharing the Google maps location works.https://flic.kr/p/2ftSrwA

local sightings in Walnut Creek

rosita94598
 

Though I have not seen it for over a week, one of our local Heather Farm birders Rosalie, saw the Tropical Kingbird yesterday about 11 AM.  It was on the fence around the new Community Garden area. 

Late this afternoon I took a short bike ride for exercise, during which I saw a Bobcat below Lime Ridge east of Citrus.  When I returned home, I thought I should check Heather Farm for the Kingbird, but had no luck.  I did have quite a few Golden-crowned Sparrows following me, though.
Hugh B. HarveyWalnut Creek

Calliope on Garin Ave, Hayward, April 17

Dave Weber
 

Saw Mark Rauzon's ebird report yesterday so I was at the bank of Pride of
Madeira along the upper part of Garin Ave early this morning. I parked at
the Garin RP parking lot (no fee!) and walked back. I walked up a steep gap
near a phone pole to a narrow cement culvert. Looking down I saw a male
Calliope Hummer 20 feet away sitting still for two minutes around 8:10. Then
I saw Jim Lomax across the road but we never refound the Calliope. One or
two Rufous were around but no Black-chinned. The Calliope is 300 in the
county for me. Later Jim and I went to Ardenwood Farms and joined Jerry Ting
to not refind the Gray Flycatcher.



Dave Weber,

Milpitas

Mitchel Canyon sightings

Philip Georgakakos
 

Hi Folks,

Today Teale Fristoe and I checked out Mitchell Canyon this morning from around 5 to about 11. If you plan to check out this area pre-dawn you need to plan around the gate at the visitors center being closed. We parked about a mile away and biked in. From the visitors center we walked down Mitchel canyon road pre-dawn to the second access point to Red Road. Then we poked around Red Road, Black Point Trail, and some of the dead end trails that lead to the park boundary, slowly we headed back to the visitors center. There were loads of warblers in mixed flocks with vireos and flycatchers.

Notable sightings:
- Western Screech-Owl tooting off Mitchell Canyon Road
- Common Poorwill calling and flying off Red Road
- Calliope hummingbirds(3) off Red Road and Mitchell Canyon Road
- Cassin’s Vireos(2)
- Hammond’s flycatcher(10) Scattered throughout, the most either of us had seen in an outing
- Nashville Warbler(6)
- Hermit Warbler (5)
- a single Macgillivray’s Warbler Male off Black Point Trail.

8 warbler species and 56 total species on the day. The flower diversity and abundance is also pretty amazing out there right now. Find the complete checklist here https://ebird.org/view/checklist/S55057989.

Hope everyone is enjoying the spring!
Phil Georgakakos
Oakland

Black Diamond Mines Thursday April 18

rosita94598
 

For many years Mt. Diablo Audubon Society has done an annual field trip to Black Diamond Mines Regional Park.  The big targets are Canyon Wren and Grasshopper Sparrow, both of which were missed this year.  In the past we have found such notable birds as Townsend's Solitaire and Lawrence's Goldfinch.  
We did have many of the regularly expected species for this location, but this year during lunch and before we did our checklist, one member asked about a bird perched on a fence in the direction of the upper parking lot bathrooms.  It as just far enough away to warrant using the scope, so I was very surprised to find that this bird was a Green-tailed Towhee.  The bird had the bright rufous crown, black-and-white marks on the face and the bright white throat, easily visible because it was facing us.
Before everyone could see it through the scope, the Towhee flew uphill to some trees and was ultimately lost to our view.  Interestingly, though, the bird appeared to be tailless when it flew.
After calming ourselves, we went through the checklist and tallied 60 species identified.  Bob Dunn's eBird list is here:  https://ebird.org/view/checklist/S55101139   Moving downhill to the visitor center parking lot, we added 4 species after Bob Left--American Kestrel, Northern Mockingbird, Cedar Waxwing and Yellow Warbler. bringing the group total to 64 species for the day.
Hugh B. HarveyWalnut Creek

Lafayette Reservoir

mbstern2
 

I walked the rim trail at the Lafayette Reservoir trail this morning and saw my FOS Ash-throated Flycatcher and heard 3 more. At least one Caspian tern was harrassing an Osprey over the water, and multiple Tree Swallows were contesting the nest boxes with the Western Bluebirds. Orange-crowned Warblers, Warbling Vireos,  and singing juncoes weere present as well.
Good Birding,
Maury Stern

Western Tanager - Black Diamond Mines R. P., Antioch - 4/19

Paul Schorr
 

Late this morning and early afternoon we did some very casual birding at BDMRP. On our way out of the park, we stopped at the fire gate along the lower end of the road and south of the old Moeller Ranch. There we spotted our FOS Western Tanager, a stunning male!

Good birding,

Paul Schorr
Antioch

Mitchell Canyon 04-20-19 (PAAS field trip report)

Matthew Dodder
 

I led my Palo Alto Adult School birding class to Mitchell Canyon today for a morning of birding. Conditions were challenging at first with overcast skies, wind and cool temperatures. The wind made it difficult to hear many birds, but by mid day it had become quite warm and nice, but remained breezy and activity picked up.

Our tour took us south along the Mitchell Canyon Fire Trail where we then hiked up White Canyon. We returned to the lot via the Globe Lily Trail that parallels the fire road. There were many highlights, but we could not help but be impressed by the lack of Contopus flycatchers—in other words, we did not find any Western Wood Pewees or Olive-sided Flycatchers despite earlier reports of them being present. Perhaps others had more luck today...

The birdiest sections were the north junction with the Globe Lily Trail, and the chaparral section along White Canyon. Here are a few of our favorite sightings today:

Rufous Hummingbird — (5) White Canyon and Globe Lily trails
Calliope Hummingbird — (7) White Canyon and Globe Lily trails
Hammond’s Flycatcher — (1) Globe Lily trail
Hermit Warbler — (2) junction of Globe Lily and Mitchell Canyon Fire Road, again on White Canyon
Black-throated Gray Warbler — (3) junction of Globe Lily and Mitchell Canyon Fire Road, again on by picnic tables
Nashville Warbler — (1) White Canyon trail along creek
MacGillivray’s Warbler — (1) White Canyon trail along creek
Hooded Oriole — (1) junction of Globe Lily and Mitchell Canyon Fire Road
Lazuli Bunting — (3) junction of Globe Lily and Mitchell Canyon Fire Road, and Globe Lily Trail itself
Western Tanager — (2) along Mitchell Canyon Fire Road

Matthew Dodder
Mountain View

Update on birds nesting in Hercules

Susana dT
 

Hooded Orioles are nesting in a palm tree across the street from our house. The nest is not visible but I see them getting into the tree canopy.
The male escorts the female while she collects nesting material and follows her when she leaves.
My indoor cat Puffy is trying to vindicate his species by offering his nice long wool to the birds, here is a video of female collecting it. https://www.flickr.com/photos/166553264@N04/32713283217/in/dateposted-public/
Photo of Puffy here (sorry, couldn’t help it):
https://www.flickr.com/photos/166553264@N04/46740280295/in/dateposted-public/

There is also an American Kestrel couple nesting, second season in a row. The male has been catching blue tailed skinks. He does a victory lap around the neighborhood vocalizing with pray in his talons pretty much every time he gets one. Here is the link showing him eating:
https://www.flickr.com/photos/166553264@N04/47655839201/in/dateposted-public/

White tailed kites are incubating.

Bewick's Wren nesting in Hercules

Susana dT
 

Sorry, I left these guys out of my last post.
A couple of years ago I took a broken electric kettle outside with the idea of planting a succulent in it. A Bewick's Wren couple had better plans for it. This is their second season nesting in the kettle. Last year she laid 6 eggs. Two weeks ago there were 4 eggs. Concerned about disturbing them I did not check after. I was surprised to see one bringing material AFTER the eggs were laid, but I guess they can always make it more comfortable, softer for the chicks. Video here:
https://www.flickr.com/photos/166553264@N04/32717789367/in/datetaken/
Feeding video here:
https://www.flickr.com/photos/166553264@N04/33783084628/in/dateposted-public/

Arrowhead Marsh--many wintering species still present in breeding plumages

Lee Friedman
 

Friday at Arrowhead Marsh (MLK Regional Shoreline) Dunlins, Short-billed Dowitchers and Spotted Sandpipers were still present and in breeding plumages, making them somewhat easier to identify (Dunlins with black belly patch, SB Dowitchers with white bellies below their spotted orange necks and chests, Spotted Sandpipers with black spots on their chests). In the new marsh area south of the observation tower and viewing platform, there were still a number of soon-to-depart species present: Blue-winged and Green-winged Teal, Gadwalls, Northern Shovelers, and Semipalmated Plovers.


Full checklist with photos attached is here:

https://ebird.org/view/checklist/S55179903


Good birding,

Lee Friedman