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Sepulveda Basin Wildlife Reserve in late winter: 15 March 2025

March 24, 2025

[By Chuck Almdale; Photos by Ray Juncosa, Armando Martinez, Emily Roth]

Lawrence’s Goldfinches, a lovely shade of chartreuse. (Armando Martinez 3/15/25)

It’s always a treat to see Lawrence’s Goldfinches, the least common of our three Goldfinch species. We had a dozen flitting from tree to grass to tree to grass, depending on perceived threats.

It had rained earlier in the week, a whopping 1.2″ spread over three days. The morning was cool, the grass was damp from dew with an occasional remaining rain puddle, but the paths were dry.

Yellow-rumped Warbler, seen throughout the day. Their middle looks twice as long as the outer toes. (Ray Juncosa 3/15/25)

The wildlife area surrounds the pond which is officially and descriptively named “Wildlife Lake.” We walked from just south of the archery range down the west side of the lake to the south end, and returned north via the path just west of Haskell Creek. There are view points of the pond along its west side and the creek has lots of trees and brush, although they’re somewhat reduced by recent fires.

Below: Aerial view looking northwest from above the Santa Monica Mountains. The wildlife area surrounds the lake with the perfectly circular island in the middle, left (west) of the Santa Monica Fwy (#405). This island has become popular with cormorants ducks, egrets and herons. Until quite recently it had a lot of trees over 30′ tall, but they burned in a fire and most were recently removed.

I think this aerial photo is quite old as it doesn’t show trees around the pond.

We tromped over the lawn towards the wildlife area, checking the trees for warblers and the grass for sparrows. Several pairs of Western Bluebirds were flycatching from the oaks.

Western Bluebird male (Armando Martinez 3/15/25)

At one point Chris Lord alerted us that he had just seen (he thought!) a Gray Flycatcher which is rare here in March and April, so we went back to search the oaks for it. We actually had two (I’m 90% sure) as the first we saw – and which quickly disappeared – was quite yellowish in comparison to the later bird we photographed.

Gray Flycatcher (L – Ray Juncosa, R- Emily Roth 3/15/25). The left bird looks grayer than the right, but they’re the same bird; the difference is an artifact of lighting.

Not much (none really) yellow on this fellow. The Gray Flycatcher is one of those annoyingly difficult-to-differentiate empids (Empidonax wrightii). They have very little eyering, but some paleness in the lores. All empid upper mandibles are dark(ish). The Gray’s lower mandible is pale at the base and dark at the tip; the amount of dark varies. The bill is long. The primary extension (how much the primary wing flight feathers stick out from below the secondaries, see the right photo above) is quite short. The tail is long and the bird habitually drops the tail from its “rest point” parallel with the back (again, see right photo above) downward, then raises it a bit more slowly back to its rest point. The empid species are variable and terms such as long, short, gray, yellow are all relative to the other empid species and not to some abstract value.

Gray Flycatcher (Armando Martinez 3/15/25)

There’s a hint of yellow on the belly shown above. The left photo below shows the bird doing what it does best, catching flies. The fly is all gone by the right photo.

Gray Flycatcher (Armando Martinez 3/15/25)

Finally, it flew off to another tree where perhaps humans weren’t so abundant and abundantly nosy.

Gray Flycatcher (Armando Martinez 3/15/25)

Again, a hint of yellow on the rump visible as the bird flies.

Cliff Swallow over pond (Armando Martinez 3/15/25)

There were swallows over the pond most of the time, in five species: Tree, Violet-green, Northern Rough-winged, Barn and Cliff.

Spotted Towhee singing for all he’s worth. (Armando Martinez 3/15/25)

There was a very beautiful Green Heron in the reeds, not looking particularly green as is usual.

Green Heron back & front (Emily Roth 3/15/25)

This adult Black-crowned Night Heron (they recently lost their hyphen) has a metal band.

Black-crowned Night Heron, banded (Emily Roth 3/15/25)

Nearly all of the cormorants were Double-crested. Notice the orange flesh above the front part of the eye, and the lack of significant white border by the gular pouch.

Double-crested Cormorants (L – Armando Martinez, R –
Ray Juncosa 3/15/25)

Now look at the front bird below, compared to the two behind. These were on the north side of the island.

Cormorants: Neotropic & Double-crested (Emily Roth 3/15/25)

The white border is clearly seen on this bird below, located on the west side of the island. The angle at the gape is also more acute in the Neotropic.

Neotropic Cormorant stared right back at us. (L – Armando Martinez, R – Emily Roth 3/15/25)

The first Neotropic Cormorant I saw in Los Angeles was in Oct. 2018, farther downstream on the L.A. River next to Bette Davis Picnic Park. My first one in California. in 1986, was at the Salton Sea at the northwest corner where the Whitewater River flows in. They’ve been slowly expanding their range northward from Mexico. So far they prefer freshwater rivers and lakes.

We had a bit of a kerfuffle over what I temporarily called a Western Cassin’s Oriole-Kingbird (an exciting new hybrid!), resolved when I later learned that the Bullock’s Oriole Chris & Femi saw was in a different tree, later in the morning. Some of us briefly & barely saw this kingbird (below) directly overhead through foliage before it flew away. The chin looks like a Cassin’s, but you can’t see the breast color for comparison. However, the outer tail feathers do look white(-ish), so we decided to call it a Western, which arrive in SoCal a tiny bit earlier in March than do Cassin’s, although many Cassin’s winter here. There’s always some sort of although, but, yet or however to make it complicated.

Western Kingbird (Armando Martinez 3/15/25)

In the far distance we saw a falcon chasing a hawk, but we couldn’t see it as well as the photo below by Armando Martinez shows. The falcon was barely more than a dot – perhaps a dash.

American Kestrel chasing Red-tailed Hawk (Armando Martinez 3/15/25)

The falcon gave up the pursuit and flew off to a tree.

American Kestrel (Armando Martinez 3/15/25)

Again, the tree was distant and we could not see the bird well. As a result we bounced around between American Kestrel, Merlin and Prairie Falcon, failing to arrive at a consensus. But once we saw the photos you’re now looking at, all questions were resolved. Two “sideburns” on each side of the head, among other field marks, nail it as an American Kestrel.

American Kestrel (Emily Roth 3/15/25)

We saw only 15 Mourning Doves. If you want to see a lot more than that, cross under Burbank Blvd. and walk through the fields down to the Los Angeles River. Sometimes there are dozens in a single tree.

Mourning Dove (Ray Juncosa 3/15/25)

Spot the birdie below!

Red-shouldered Hawk (Emily Roth 3/15/25)

The warblers weren’t really coming through yet, but by the time you read this there are probably many more in the trees and bushes along Haskell Creek. 63 species for a morning of birding not far from two freeways in the middle of the very well-settled San Fernando Valley is a respectable total. Good birding is closer than you think.

Sepulveda Basin Field Trips 
English Name3/15/253/9/243/11/233/10/182/11/172/13/16
Canada Goose3530EXXX
Egyptian Goose 2AXXX
Muscovy Duck X
Mallard2025BXXX
Hooded Merganser AXX
Pied-billed Grebe124BXXX
Feral Pigeon8 D X 
Eurasian Collared-Dove  1   
Mourning Dove1525CXXX
White-throated Swift X
Anna’s Hummingbird68AXXX
Rufous Hummingbird X
Allen’s Hummingbird1012BXXX
American Coot310DXXX
Killdeer    X 
Gull sp. 10    
Western Gull     X
Double-crested Cormorant3015DXXX
Neotropic Cormorant421   
American White Pelican 20CXX 
Snowy Egret21A XX
Black-crowned Night-Heron46BXXX
Green Heron23AXXX
Great Egret15BXXX
Great Blue Heron21AXXX
White-faced Ibis1     
Turkey Vulture104CXXX
Osprey12AXXX
Cooper’s Hawk1AXX
Red-shouldered Hawk1A
Red-tailed Hawk32AXX
Great Horned Owl 1   X
Belted Kingfisher 11XXX
Acorn WoodpeckerH3A   
Red-breasted Sapsucker     X
Downy Woodpecker 2 XX 
Nuttall’s Woodpecker2 AXXX
Northern Flicker  A XX
American Kestrel22    
Merlin  1   
Yellow-chevroned ParakeetH   XX
Ash-throated Flycatcher     X
Cassin’s Kingbird4 AX X
Western Kingbird1     
Gray Flycatcher2     
Black Phoebe48AXXX
Western Scrub-Jay 2  XX
American Crow104 XX 
Common Raven  B   
Tree Swallow2015DX  
Violet-green Swallow3 AX  
N. Rough-winged Swallow5 CXX 
Barn Swallow13    
Cliff Swallow6 B   
Bushtit28CXX 
Wrentit1     
Ruby-crowned Kinglet4 A XX
White-breasted Nuthatch11A  
Blue-gray Gnatcatcher1  XX
Bewick’s Wren42  XX
Northern House Wren   X 
California Thrasher     X
Northern Mockingbird11A XX
European Starling258C XX
Western Bluebird89BXXX
Mountain Bluebird  D   
Hermit Thrush     X
American Robin  A   
American Pipit1     
House Finch3520DXXX
Lesser Goldfinch203DXXX
Lawrence’s Goldfinch12 D   
American Goldfinch     X
Lark Sparrow   X X
Chipping Sparrow104B XX
Dark-eyed Junco2   X 
White-crowned Sparrow2510DXXX
Savannah Sparrow4   XX
Song Sparrow1016CXXX
California Towhee43BXXX
Spotted Towhee33XXX
Western Meadowlark6 A   
Bullock’s Oriole1     
Red-winged Blackbird203DXXX
Brown-headed Cowbird3010    
Great-tailed Grackle22CXX 
Orange-crowned Warbler2  XX 
Common Yellowthroat68BXXX
Yellow-rumped Warbler2080DXXX
Total Species – 88 + 1 taxa634856445151
X – Seen  
H – Heard only  
1, 15 – Number seen  


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