Gadwall male swimming in pond at Ellis Creek, Petaluma, California

PWA Monthly Bird Survey at Ellis Creek (9/19/19)

Thursday, September 19, was the bimonthly bird survey at Ellis Creek for the Petaluma Wetlands Alliance (PWA). The sun rising over the wetlands at 7 AM was a sight to behold!

Morning landscape sunrise over wetlands at Ellis Creek, Petaluma, California
A most gorgeous morning!

Bird survey volunteers walking at Ellis Creek, Petaluma, California
The team heading out

The group observed no less than five Yellow Warblers along the walk, including this one lit up gold by the early morning sun.

Yellow Warbler in barren tree at Ellis Creek, Petaluma, California
Yellow Warbler

Listen to the sweet chip note of the Yellow Warbler below.

There’s no sound like a flock of busy Bushtits coming towards you. We can’t help but hear the tune of the Batman theme song along with it: “Duh-nuh-nuh-nuh-nuh-nuh-nuh-nuh, BUSHTITS!!

Here’s a female and a male spending some time in the fennel.

Bushtit female perched in fennel at Ellis Creek, Petaluma, California
Bushtit (female)
Bushtit male perched in fennel at Ellis Creek, Petaluma, California
Bushtit (male)

Canada Geese are a year-round staple at Ellis Creek. Always bold, this small flock foraged near the path.

Canada Geese foraging at wetlands at Ellis Creek, Petaluma, California
Canada Geese

All morning, a constant stream of Mallards flew overhead to the ponds beyond.

Small flock of Mallard ducks flying overhead at Ellis Creek, Petaluma, California
Headin’ to the ponds

Soft morning light makes everyone look especially good – this dapper Song Sparrow is no exception.

Song Sparrow perched on top of a bush at Ellis Creek, Petaluma, California
Song Sparrow

A lone Black-tailed Jackrabbit sat wide-eyed in the grass as we walked past.

Black-tailed Jackrabbit sitting on the ground at Ellis Creek, Petaluma, California
Black-tailed Jackrabbit

Gadwall were numerous in the ponds (we counted 250+), and we spent some time observing their courtship interactions.

Gadwall pair male and female swimming toward each other at Ellis Creek, Petaluma, California
Gadwall (female and male)

Throughout the recording below, you can hear two characteristic male Gadwall vocalizations within the courtship repertoire: a deep frog-like “burp” and a high-pitched whistle. You can also hear the descending “quack-quack-quack” of a female, prominently at 0:52 seconds.

Gadwall male swimming in pond at Ellis Creek, Petaluma, California
A handsome male Gadwall
Gadwall male with wings spread flapping showing speculum patches on wings in pond at Ellis Creek, Petaluma, California
Notice the chestnut-red patch on the wing coverts

Our audio recordings don’t always come from bird vocalizations – after a few snorting sneezes, listen for the sound of several juvenile Mute Swans flapping and running along the surface of the water.

A Killdeer flew by and gave us a nice look at its double neck-rings and underwing pattern.

Killdeer flying overhead with wings spread at Ellis Creek, Petaluma, California
Killdeer

We nearly walked right by this Great Blue Heron skulking in the brush!

Great Blue Heron standing on ground at Ellis Creek, Petaluma, California
Great Blue Heron
Group of people birding on path at Ellis Creek, Petaluma, California
The team observing a distant Peregrine Falcon

Group of bird survey volunteers at Ellis Creek, Petaluma, California
[L-R] Teresa, Mary, JJ, Andy, Deb, Malcolm, Sharon, Harley (not pictured – Miles, Len)
Determined to not go uncounted, this California Scrub-Jay popped out as we said our goodbyes from the parking lot.

California Scrub-Jay perched on top of parking sign at Ellis Creek, Petaluma, California
California Scrub-Jay

By the end of the morning, the team had tallied 69 species. In the following days, nine additional species (including an immature female American Redstart) were located by team members returning to Ellis Creek, bringing the grand total to 78 for PWA’s September 2019 survey – a tie for the species high count for September!

If you have any questions about this particular count or if you’re interested in participating in future counts, please contact the coordinator/compiler for these surveys, Len Nelson, at lennelsn@comcast.net.

4 thoughts on “PWA Monthly Bird Survey at Ellis Creek (9/19/19)

  1. I love all the recordings accompanying the pictures. (This is Maria Caswell, BTW, masquerading as my chamber music group.) Also, so much better looking at this on my computer than my phone, wow!

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