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Two Newish Birds: Malibu Lagoon, 24 August 2025

August 30, 2025

[By Chuck Almdale]

Forster’s Tern (Armando Martinez 8-24-25)

A couple of the early birders had already spotted the bird, perched on a sidewalk railing slightly west of our gathering area, the metal pavilion. It was a poor angle and the bird was facing away, so we trooped over towards that odd-looking structure of bent, cabled girders to get a full-frontal view.

Birders, birding, about 10 minutes in. Snowy Egret keeps a low profile. (Ray Juncosa 8-24-25)

Black-crowned Night Herons are regular at the lagoon. Out of of 338 censuses since October 1979, we’ve recorded them 161 times with a total of 490 birds. So…they show up 48% of the time, averaging three birds per visit. Singletons are common, single digits are the rule, double digits quite uncommon, and the high count was 15 birds on 26 Aug 2007. Before March 2001 we had only seven sightings, total, when they quickly became more common. That was when I began leading the trips and perhaps I checked the trees more thoroughly than my predecessors. After all, they are Night Herons – note the relatively large eyes – and we mostly see them out walking around only on cloudy days or during morning and evening twilight. On sunny days they’re hiding in a tree or thick brush, and they’re excellent at hiding and not moving.

However, this bird below is not a Black-crowned Night Heron, but a Yellow-crowned Night Heron. Notice the bright yellow crown? What…you missed it, it’s right there!

Yellow-crowned Night Heron (Armando Martinez 8-24-25)

Yeah, that’s right, they don’t get their yellow crown until their second spring (not counting their birth year), when they’re old enough to breed. The bird below is either a juvenile, born this year, or a year old. This species is in the process of spreading generally northward through SoCal. About 30-40 years if you wanted to see one, you drove down to Scripps Lab near San Diego where one – one! – roosted reliably in a particular tree. Some 10-20 years ago they appeared in a marsh on Pt. Mugu Naval Air Station where they outnumbered the Black-crowns the last time I was there. Maybe 5 years ago they began appearing regularly in Ballona Fresh Water Marsh. So it goes…range extensions. The same thing happened with Great-tailed Grackles and Neotropic Cormorants during my SoCal birding lifetime. Other terns and gulls and now boobies on the Channel Islands. Whether global warming has anything to do with this, I don’t know. It’s probably been going on since the last time the ice cap retreated north.

Yellow-crowned Night Heron, trying to catch some shut-eye.
(Ray Juncosa 8-24-25).

Sub-adult Yellow-crowns run grayer than the brownish Black-crowns. Their white spots are smaller and the dark on their bills is black rather than gray. Considering the amount of yellow on this one’s bill, I can’t help but wonder if their isn’t a Black-crown in it’s ancestry. They do hybridize, and we had a hybrid juvenile some 15-20 years ago at the lagoon, before the last reconfiguration.

They’ve been reported at the lagoon before, and a few of the group saw a juvenile by Adamson House a year or two back which we put on the trip report; Chris & Ruth Tosdevin saw it, but I missed it. According to eBird this is the 33rd date on which a YCNH has been seen at Malibu Lagoon. This particular bird has been reported to eBird 27 times (soon to be 28) between 10 August and 24 August. Word gets around.

The Western Pygmy Blue Butterfly Brephidium exilis is the smallest butterfly in California and (reportedly) one of, if not the smallest butterfly in the world, and they’re regular at Malibu Lagoon, if you can find them. With wingspan 1/2-3/4th inch, about the same as the tip of your little finger and always very low to the ground, if you spot one it’s hard to be sure what it is, if it’s even alive and not some dead leaf-part blowing around, and when it stops, just exactly where it landed, blending in perfectly. If you’re diligent and lucky and back off a bit, you may find them with your binoculars. They’re native from California to Florida, with subspecies as far away as the Bahamas, Hispaniola, and Yucatan Peninsula. Somehow they’ve even managed to get to Hawaii and the Persian Gulf, flapping away across the stormy sea, I suppose, or inside-by-accident someone’s luggage.

Western Pygmy Blue Butterfly Brephidium exilis (Chris Tosdevin 8-24-25)

Dark-eyed Juncos (previously Oregon Junco) aren’t what we think of when think about lagoon birds, but they’re become fairly regular in recent years. First recorded on our walks in September 2017, we’ve now recorded them 22 times, and in 10 of the past 13 months, probably mostly by Femi, Chris and Ruth. Usually one or two birds; once there were four. They’re fairly common in our local parks on the lawns during the winter, gathering insects and whatnots. There are a lot of distinguishable subspecies, and I think all of them gather at the mouth of Cave Creek Canyon in SE Arizona by New Year’s Day, should you be so inclined to visit.

Dark-eyed (Oregon) Junco (Chris Tosdevin 8-24-25)

I include these two photos below to show how plumages are changing from spring/summer breeding. Take a look at last months lagoon report to see them, one month younger.

Heermann’s Gull, Ruddy Turnstone (Chris Tosdevin 8-24-25)

The two following species are easily and often confused, so I put them side-by-side. Song Sparrow, on the right, is common across the U.S., a SoCal resident and breeds at the lagoon. We see them on 98% of visits; they’re always there, I’m sure, but they don’t always pop out of the brush and sit on the trail, staring at you, or sing loudly as you saunter by. They like to live near water.

Sparrows, Savannah & Song (Chris Tosdevin 8-24-25)

Savannah Sparrow. on the left, breeds from southern Mexico (at least!) to high arctic Alaska, and across the USA, but I don’t think they breed at the lagoon. We see them 1/6th as often as the Song, and never in May and June. Their central breast spot – if any – is less noticeable than the Song’s, the breast streaks usually a bit thinner, the bill slightly thinner and more pointed and they usually have some dull yellow in the lores/eyebrow. When we see them at the lagoon, it’s usually around the edges of the channels or lagoon.

Forster’s Tern (Chris Tosdevin 8-24-25)

Forester’s Tern used to be a lot more common at the lagoon. Their historical presence peaks Nov-Apr and are nearly absent June-July, when they’re elsewhere breeding. Of 130 sightings at the lagoon since 1979 (892 birds total), we’ve seen them only 10 times (17 birds) since Christmas Day, 2016; that woefully averages to one visit per year. Compare that to my first 11 visits over a 5-month period Oct 1979 – Mar 1980: present 10 out of 11 times for a total of 181 birds. They’re similar to the not-at-all-Common Tern, but it would be tough to confuse them with Royal or Elegant, so sheer ignorance on my part isn’t the explanation. The last time we had more than 100 Forster’s Terns in a single year was 1982, and we haven’t seen them more than six times per year since 2008. Definitely dwindling. Seeing this one standing and flying at the lagoon, pictured just above and in the first photo, was a treat. Compare it to the Royal and Elegant Terns below; not greatly confusable with either of them. Elegants have the more pointy, slender and curved bill and there are at least four of them pictured below. The rest are Royals.

Elegant & Royal Terns (Chris Tosdevin 8-24-25)

Somewhere along the trail Femi, Ruth and Chris spotted a Swinhoe’s White-eye. They didn’t get a great look at it, but they felt it was sufficient and Femi also recorded it with Merlin. [I’ve previously expressed my doubts about Merlin ID’s when it comes to chip notes and very low volume songs after it ID’d an Osprey and Northern Cardinal in the back yard bushes – then filled with House Sparrows and House Finches – of my north San Fernando Valley home.] The White-eye family Zosteropidae is an old-world family, widespread from sub-Saharan Africa to Australasia, and the Swinhoe’s Zosterops simplex range is from west Indonesia to central China. It is far more widespread as an escaped cagebird, gone feral, which is how they got to SoCal and why they’re becoming more widespread. Our local population extends from northern Baja to Sonoma, with possible outlying populations in Redding and Seattle. The highest concentration of sightings is in the Anaheim – Irvine area. See the link above for a map. We’ve seen them on several field trips.

Swinhoe’s White-eye (Chris Tosdevin 10-12-24,
Huntington Beach Central Park)

They’ve been sighted at the lagoon before and there are 19 sightings*** at the lagoon on ebird, many of them for the same six dates (thus probably same bird); most likely six different actual White-eye visits. First sighting was by Dan Cooper on 5-19-24. On the lagoon list they appear as bird #319, an “Exotic-Provisional” species.

I always like seeing White-eyes in SoCal even if we can’t “count” them. I’ve seen 28 White-eye species scattered around the old world, including the Swinhoe’s on Taiwan, and they are always lovely, friendly, bouncy little birds.

***Note: I’ve often wondered how to find out about a particular species at a particular location on eBird. Femi clued me in on this and I’m passing it on to you and preserving it for posterity.
1. Go to eBird https://ebird.org/home Select Explore.
2. Scroll down to and select Species Maps. You’ll need to sign in or create an account. It’s free!
3. Enter the species name, e.g. Swinhoe’s White-eye.
4. When map appears, zoom in to part of the world you want until little red and blue markers appears.
5. These markers are “hot spots.” Click on the one you want.
6. A list of sightings and the hot spot name opens up. Click on the name or sighting to see more detail.

Malibu Lagoon on eBird as of 8-29-25: 8693 lists, 2796 eBirders, 321 species
Most recent new species seen: Nelson’s Sparrow, 11/29/24 by Femi Faminu (SMBAS member). When the newest species added to the list was seen on a date prior to the most recently seen new species, there is no way I can find to easily determine what that bird is. Another minor nit to pick about eBird.

Birds new for the season: Forster’sTern, Elegant Tern, Yellow-crowned Night Heron, White-faced Ibis, Red-tailed Hawk, California Scrub-Jay, Swinhoe’s White-eye, Northern House Wren, Savannah Sparrow. “New for the season” means it has been three or more months since last recorded on our trips.

Many, many thanks to photographers Ray Juncosa, Armando Martinez & Chris Tosdevin.

Upcoming SMBAS scheduled field trips; no reservations or Covid card necessary unless specifically mentioned:

  • Coastal Cleanup at the Lagoon, Sat. Sept. 20, 9-12
  • Malibu Lagoon, Sun. Sept. 28, 8:30 (adults) & 10 am (parents & kids)
  • Huntington Beach Central Park Sat, Oct. 11, 8:00 Leader: Liz Galton egalton687[AT]gmail.com Reservation required
  • Malibu Lagoon, Sun. Oct. 26, 8:30 (adults) & 10 am (parents & kids)
  • These and any other trips we announce for the foreseeable future will depend upon expected status of the Covid/flu/etc. pandemic, not to mention landslides, at trip time. Any trip announced may be canceled shortly before trip date if it seems necessary. By now any other comments should be superfluous.
  • Link to Programs & Field Trip schedule.

The next SMBAS Zoom program: October 7, to be announced.

The SMBAS 10 a.m. Parent’s & Kids Birdwalk has again resumed. Reservations not necessary for families, but for groups (scouts, etc.), call Jean (213-522-0062).

Links: Unusual birds at Malibu Lagoon
9/23/02 Aerial photo of Malibu Lagoon
More recent aerial photo

Prior checklists:
2025: Jan-June
2023: Jan-June, July-Dec 2024: Jan-June, July-Dec
2021: Jan-JulyJuly-Dec2022: Jan-June, July-Dec
2020: Jan-JulyJuly-Dec  2019: Jan-June, July-Dec  
2018: Jan-June, July-Dec  2017: Jan-June, July-Dec
2016: Jan-June, July-Dec  2015: Jan-May, July-Dec
2014: Jan-July,  July-Dec  2013: Jan-June, July-Dec
2012: Jan-June, July-Dec 2011: Jan-June, July-Dec
2010: Jan-June, July-Dec  2009: Jan-June, July-Dec

The 10-year comparison summaries created during the Lagoon Reconfiguration Project period, remain available—despite numerous complaints—on our Lagoon Project Bird Census Page. Very briefly summarized, the results unexpectedly indicate that avian species diversification and numbers improved slightly during the restoration period June’12-June’14.

Many thanks to Marie Barnidge-McIntyre, Femi Faminu, Ruth & Chris Tosdevin and others for contributions made to this month’s census counts.

The species list below was re-sequenced as of 12/31/24 to agree with the California Bird Records Committee Official California Checklist, mostly. If part of the right side of the chart below is hidden, there’s a slider button inconveniently located at the bottom end of the list. The numbers 1-9 left of the species names are keyed to the nine categories of birds at the bottom. Updated lagoon bird check lists can be downloaded here.
[Chuck Almdale]

Malibu Census 20253/234/275/256/227/278/24
Temperature54-6456-6463-6866-7364-7068-75
Tide Lo/Hi HeightH+4.15H+4.29H+3.78H+3.31L-0.46H+4.74
 Tide Time043309570909082406051102
1Brant (Black)   1  
1Canada Goose28151 
1Cinnamon Teal6     
1Gadwall351024252019
1Mallard222126204014
1Green-winged Teal6     
1Surf Scoter6     
1Red-breasted Merganser31  1 
1Ruddy Duck11104319 
2Pied-billed Grebe844434
2Western Grebe302542  
7Feral Pigeon 16554
7Mourning Dove122122
8Anna’s Hummingbird3311 1
8Allen’s Hummingbird652244
2American Coot55114164
5Black-bellied Plover    2149
5Killdeer432549
5Semipalmated Plover 2  41
5Snowy Plover3   1317
5Whimbrel83  112
5Marbled Godwit8     
5Ruddy Turnstone    31
5Dunlin1     
5Least Sandpiper51  104
5Western Sandpiper34   4 
5Spotted Sandpiper1     
5Willet10  1  
5Greater Yellowlegs2     
5Wilson’s Phalarope    1 
6Heermann’s Gull   133610
6Ring-billed Gull623524
6Western Gull2020707952115
6California Gull1282514
6American Herring Gull1     
6Glaucous-winged Gull1     
6Caspian Tern1126442
6Forster’s Tern     1
6Royal Tern10   21135
6Elegant Tern2    70
2Pacific Loon11    
2Common Loon10     
2Brandt’s Cormorant512  11
2Pelagic Cormorant 1  12
2Double-crested Cormorant25257189874
2American White Pelican5     
2Brown Pelican2002515713811832
3Snowy Egret51211010
4Yellow-crownd Night-Heron     1
3Black-crownd Night-Heron1  411
3Green Heron    12
3Great Egret211342
3Western Cattle-Egret 1    
3Great Blue Heron211955
3White-faced Ibis     1
4Turkey Vulture 2    
4Osprey111 1 
4Cooper’s Hawk1     
4Red-shouldered Hawk  1 11
4Red-tailed Hawk111  1
8Belted Kingfisher1   1 
8Nuttall’s Woodpecker    11
4Peregrine Falcon   1  
8Nanday Parakeet 22   
9Cassin’s Kingbird111   
9Black Phoebe312222
9California Scrub-Jay1 1  1
9American Crow656698
9Common Raven921   
9Oak Titmouse1     
9Tree Swallow5 1   
9Violet-green Swallow 5    
9No. Rough-winged Swallow17207152
9Barn Swallow102018222040
9Cliff Swallow37242412 
9Bushtit2523122020
9Wrentit422221
9Swinhoe’s White-eye     1
9Northern House Wren     1
9Northern Mockingbird  1   
9European Starling10101062535
9House Finch261554512
9Lesser Goldfinch4 22  
9Dark-eyed Junco11 216
9White-crowned Sparrow51    
9Savannah Sparrow     1
9Song Sparrow1086536
9California Towhee33211 
9Spotted Towhee112   
9Hooded Oriole 1112 
9Brown-headed Cowbird 2    
9Great-tailed Grackle23681 
9Orange-crowned Warbler312 11
9Common Yellowthroat64 514
9Yellow-rumped Warbler3     
9Wilson’s Warbler1     
Totals Birds by TypeMarAprMayJunJulAug
1Waterfowl915055548133
2Water Birds – Other339104176163227117
3Herons, Egrets & Ibis1044172122
4Quail & Raptors343122
5Shorebirds769266193
6Gulls & Terns5226161106116341
7Doves138676
8Other Non-Passerines10105366
9Passerines160115103103110141
 Totals Birds742325517459631761
        
 Total Species by GroupMarAprMayJunJulAug
1Waterfowl854552
2Water Birds – Other985566
3Herons, Egrets & Ibis443457
4Quail & Raptors333122
5Shorebirds1041297
6Gulls & Terns844568
7Doves122222
8Other Non-Passerines333233
9Passerines252221161616
Totals Species – 94715546425453


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