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Monthly Archives: March 2026

Hotspots for eBird bar charts April 1 – 7

7:57 pm

Greetings,
This time I’m making sure to send this new list out before the calendar actually rolls over, lest anybody think I’m kidding when I say that SDSU Mission Valley River Park only needs one more week to achieve 100% bar charts!
The past week was a bit unusual, with quite a few folks going for the same few hotspots at the top of the list with fewest weeks remaining. And that means those spots got particularly good data, with every checklist adding something unique to mix!
Hotspots nearing bar chart completion:

SDSU Mission Valley River Park – 1
San Diego Bay–bait barges – 5
San Luis Rey River–Foussat to Douglas – 9
Eternal Hills Cemetery – 10
La Bajada Field (restricted access) – 11
Lake View Park – 13
San Luis Rey Mission – 13
San Onofre Creek mouth – 14
San Diego Bay NWR–Paradise Marsh – 15

Hotspots with 3+ week bar chart gaps:

Mahr Reservoir
Aston & Rutherford business area
Jackson Park
Buena Vista Lagoon–Jefferson St. overlook (east of I-5)
Calzada Del Bosque / Chino Farms area
Sage Canyon Park
La Posta Creek pullouts
Sweetwater Community Gardens
Grape Day Park
Rolling Hills Park
Emerald Hills Park
Encinas Creek–Laurel Tree Ln.
Cuyamaca Rancho SP–Harvey Moore Trail
Carmel Mountain Ranch Community Park
Montgomery-Waller Park
Monserate Mountain Preserve
Veterans Park (Imperial Beach)
El Monte Rd. fields
Rolando Park
Vista Conservancy–Nature Trail
Calle Acervo Trail

Cheers,


Ruslan Balagansky
San Diego (Mira Mesa), CA

Re: Coastal seabird numbers and mortality

11:16 am

Here’s the latest news release from California Department of Fish and Wildlife, including links on How the Public Can Help.

Reporting these events (with photos) is critical to assessing the scale:
Justyn Stahl
North Park

Coastal seabird numbers and mortality

8:56 am

There has been a fair amount of online discussion and websites discussing increasing seabird mortality, with beached birds being found in larger numbers, not only the usual suspects like pelicans and cormorants, but also some murres and rhinos. The water is warmer than normal and there may be a food source issue developing, although as recently as late February fishing captains were telling me that there were plenty of bait fish around. 

Sometimes under these conditions the best fishing is right near the shore, and I just finished spending 2 hours looking off the end of Seacoast Drive near the Tijuana River mouth and near the imperial Beach Pier and tallied a record total of 430 Red-throated Loons, a species that annually stages along this section of coast in March and early April but not normally in nearly these numbers. Also about 100 Pacific Loons, 1800 Western Grebes, and four Cocos Boobies.
Paul Lehman, San Diego 

Re: Mira Mesa Acorn Woodpeckers

8:56 am

Interestingly, I frequent that SRS location as I am employed with Sharp, more often than not I indeed hear and see Acorn woodpeckers there. I am always amazed at the great bird activity there on any given day, must be all of the surrounding canyons. Thanks for sharing Laurel.  

-Diana 

Mira Mesa Acorn Woodpeckers

4:19 pm

Good afternoon,
 
After visiting the Sharp Rees-Stealy clinic at 10243 Genetic Center Drive, I was surprised to hear an Acorn Woodpecker. A group has taken up residence in at least one of the date palm trees at the front of the building. Not sure if this has been reported.
 
Good birding,
 
Laurel Scott
San Diego, CA (Mission Valley)
 
 

San Diego Birdathon: April 10 – May 10

1:56 pm

Hi all,
 
Spring is upon us, and very soon we should start seeing good numbers of our favorite migratory species. If you needed even more reason to get out during the peak of spring migration, what if I told you that birding between April 10 – May 10 could benefit local conservation initiatives?
 
The San Diego Birdathon is a friendly birding competition and fundraiser supporting San Diego Birdathon Alliance’s local endangered species work (California Least Tern, Light-footed Ridgway’s Rail). Teams and individuals endeavor to spot as many species as possible within a 24-hour period during April 10 – May 10, and friends can support their efforts by donating per-species or a flat amount.
 
Last year, a hardcore team spotted 173 species in San Diego County under traditional Big Day rules. Will a new team rise to break the record this year? I’m excited to see!
 
 
More information and sign-up here:
https://charity.pledgeit.org/sandiegobirdathon2026
 
Awards for teams and individuals who raise the most funds and spot the most birds will be announced at a fun closing celebration on Sunday June 7 (more details TBA).
 
This will also be prime time for taking Bird Atlas breeding data, and there will be award for whoever documents the most confirmed breeding codes in one day too :)
 
I won’t flood the listserv with more updates about the Birdathon, so please DM me if you have any questions!
 
Hope to see you out there
Nick Thorpe
University Heights
Nick Thorpe
University Heights

Re: Odd bird song in Poway yesterday afternoon

3:28 pm

Lisa: It sounds to me like you have two birds singing similar unusual songs, which reduces the likelihood that it’s a significant rarity. It’s worth noting that this is the time of year for unusual songs. Males entering their first breeding season will often be singing subsong or plastic song as they transition to their final adult song, and adult males may sometimes sing truncated songs before the breeding season is fully underway.

Mountain Chickadee seems like a reasonable possibility for these, although it’s hard to find close matches in the Macaulay library, as you mentioned. The closest I can find is this one: https://macaulaylibrary.org/asset/632267226

Zonotrichia sparrows, like a Golden-crowned Sparrow or even a White-throated Sparrow, might also be possibilities, but the notes are a bit short and delivered more rapidly than I would expect. Those species also often intersperse various call notes with song phrases, which I don’t hear in your recording. Which brings up another point. When recording an unknown species, it’s always a good idea to get recordings that are as long as possible. Often a suspected ID can be clinched if there are species specific call notes that show up eventually along with the song phrases.

If you get a chance, I would encourage you to go back and see if you can confirm the ID.

Bruce Rideout
La Mesa

Odd bird song in Poway yesterday afternoon

11:55 am

Hi,

I was on a bike ride yesterday afternoon and stopped at Valle Verde Park
for a little while to check for birds. Right when I got there I heard a
bird singing and I could not identify the song. Merlin couldn’t either,
despite repetitive singing and the bird being close. I have a recording.
After putting the recording on the computer, amplifying it and playing
it back to Merlin, Merlin finally decided it was a Mountain Chickadee.
That seems like a distinct possibility, but I don’t think I’ve ever
heard a Mountain Chickadee song sound quite like this. Possibly at Mount
Palomar where I’ve heard them make different sounds, but I don’t
remember. It’s not unusual for me to run across Chickadees around the
Poway and Carmel Mountain Ranch area at this time of year. I’ve listened
to many recordings of Chickadees online and can’t find one like this.
I’ve listened to a lot of Warbler songs and none of those matched
either. I posted the recording under passerine sp on my list, which is here:

https://ebird.org/atlascalifornia/checklist/S312814277

Anyone know for sure if this was a Mountain Chickadee, or know what it
was if it was something else?

Lisa Ruby
Sabre Springs


Lisa Ruby
Sabre Springs

Cassin’s & Purple Finch comparisons (Laguna Mountains)

11:27 am

For a while now there has been a small to fair number of Cassin’s Finches in the Laguna Mountains. In contrast, very few or none are in the Cuyamacas–where one recent report of Cassin’s ended up being a Purple. A visit this morning, Monday, to the Lagunas produced small numbers of Cassin’s at a total of four sites along Sunrise Highway, where also Purple Finches are present. At two of these sites–the Mile 19 pullout/trailhead and farther north at the turnoff for the Laguna Campground–there were several each of Cassin’s and Purple Finches in mixed flocks. And at Mile 19 there were also a couple House Finches present, so we had a Hat Trick of Haemorhous finches there. Anyway, at multiple sites the presence of both Cassin’s and Purples provided for a good ID lesson and an opportunity to try to tell the songs apart of the two species (much more difficult than the call-notes).
It has been a rather mediocre season for Townsend’s Solitaires this winter, so of note was an individual today at Desert View Picnic Area, a site that has supported this species over the past several years (same individual?).
Paul Lehman, San Diego

“vagrant” Black Oystercatcher, miscellanea, private property birds

10:51 am

On Sunday morning, a Black Oystercatcher came flying into San Diego Bay and briefly landed at the Shelter Island boat launch area before returning south past North Island toward the mouth of the bay. This put the bird a solid two miles farther into San Diego Bay than the usual inside location of Ballast Point.
Also early on Sunday morning, the female Hepatic Tanager continues at the north end of Bill Cleator Park, in the line of eucalyptus behind the YMCA. This is one of three Hepatics still present this month in the county, with the others being in La Jolla and the well-known bird in Wing Street Canyon.
For much of the winter, there have been one or two rare warblers present in the Serra Mesa neighborhood of San Diego which I have periodically reported and clearly noted as being on undisclosed PRIVATE property. Such sites which are sensitive in some way include schools, private neighborhoods not accustomed to birders, kiddy playgrounds, some high-tech corporate parking lots, golf courses, etc. Just imagine a bunch of binocular- and camera-wielding birders walking around some of these sites. In some such cases, a small number of folks are likely OK to visit as long as they follow some common-sense protocols of behavior. I and others regularly strive to make such sites available via private correspondence, where the “rules of engagement” can be explained, IF numbers are kept manageable and IF people can behave. One expectation is that people told of the location will then not turn around and, without “permission,” publicize it to “just” a bunch of their own personal friends or to the world in eBird reports with exact locations of lat-long coordinates down to six decimal points. Thank goodness the couple warblers in question here were very rare species which also occurred elsewhere on public property this winter as well and were well seen by hordes. Very lucky for that, otherwise the demand would have been through the roof. Anyway, this didn’t stop several folks from posting eBird reports with exact locations and no mention of site sensitivity.
It is experiences such as these, and happening more and more with the ever-increasing number of observers and photographers, that will result in more and more rare birds being suppressed. Not a desirable outcome, but unfortunately necessary. It doesn’t take much for things to quickly get out of hand and for everyone to be tossed out of such sites forever. And it doesn’t take very many folks to misbehave and we all suffer the consequences. In 98% of these situations, people don’t misbehave out of spite, although a few just don’t care. Most of them just aren’t carefully thinking about the ramifications of what they are doing.
–Paul Lehman, San Diego