June 13th, there was a small raft of assorted summering ducks off the east side of Brooks Isl. that included 42 summering Surf Scoters and 1 Long-tailed Duck. I presume this is the same Long-tailed Du

Also... I have made this location a hotspot (it should appear on the maps in ~24 hours) so if you do investigate for yourself, please submit all ebird lists for this location to the “Mt. Diablo SP—Gra

This morning close to the summit of Mt. Diablo I fulfilled a long time dream of mine by stumbling upon a fantastic show of diurnal migration!—entirely by accident. I’ve spent years now scouring topogr

This afternoon Yadira Joy’s second county record Vermilion Flycatcher continued at Contra Loma Park after being refound by Srikant Char a little after 1:00pm. Yadira’s directions are excellent; this a

Yesterday April 26th I birded the upper slopes/summit area of Mt. Diablo (Oak Knoll and Blue Oak Campground, Green Ranch Rd., Muir Picnic Area, Juniper Picnic Area, the summit, and some of summit rd.

Thanks, Michael, this is great stuff!! I applaud you for doing this, and being so systematic about it. Over the past couple of years I have made a (much less concerted) effort to find flight spots in

Following last night’s (and early this morning’s) rain, I made it out to Richmond this morning praying for a pelagic bird carried into the bay by the storm. Nothing much on that front, but the bay was

Hi Betty, Bald Eagles were found nesting very loosely in that vicinity (meaning the Carquinez Strait) in 2017 by Eric Pilotte and Scott Restivo and have come back to that site every year since. That p

It has been my experience that on the open water of the SF Bay from Point San Pablo through Pt. Isabel, Clark's Grebe is the dominant Aechmophorus grebe. This varies from slightly dominant (2:1 or 3:1

Hi All, Teale F. has asked me to relay that he has refound and is watching the Slaty-backed Gull at Landfill Loop this morning. Nice work, Teale! Ethan Monk

And the gull just disappeared into the dump. You can’t see any of the gulls in the dump, but the gulls cycle between the water and the dump. So it is a waiting game now. Ethan Monk

For those unfamiliar with this spot, the gulls are on the north side of the loop. Park at the west end Parr Blvd. and walk north through the booths/kiosks. Do not walk through the gates right next to

Subject line says it all. 3rd cycle or so. Ethan

A quick correction, Nelson's Gull should be Herring x Glaucous Gull--not Herring x Glaucous-winged, which isn't an uncommon hybrid here. Ethan <z.querula@...> wrote:

Today I did something unusual for me, spending the first half of my day in Alameda County before cutting over to Eastern Contra Costa in the later part of the day. I had a few sightings of note includ

This evening I walked from Port Costa down the railroad tracks to within about a half a mile of the Eckley Pier in Crockett. Here, in addition to 11 Barrow's Goldeneye, I ran into a Brandt's Cormorant

This morning at Booker T. Anderson Park in Richmond, I ran into a singing Orange-crowned Warbler that seemed consistent with the ssp. sordida, which occurs primarily in Southern California. My documen

Today I spent a little while birding the town of Port Costa, and then checking a few spots in Richmond. I've actually never birded in Port Costa before besides driving McEwen Road for Rough-legged Haw

Hey, while we’re talking about spraying and destroying of non-native plants, does someone want to tell East Bay Regional Parks to not weed wack fennel? The past couple of years, it seems each summer E

To clarify: the bird is there on mudflats. The bulb is circular, like a clock. It is roughly at 2o clock on the bulb, if North is 12, so on the North East edge. Ethan