Female Western Tanager on a branch surrounded by oak leaves

2021 Christmas Bird Count #1: Eastern Alameda County (12/17/21)

This past Friday we joined our friend Adam Cimino for his section of the 2021 Eastern Alameda County Christmas Bird Count. We lucked out with a brilliantly sunny day for our walk along the Arroyo del Valle Trail. Over a 4-mile stretch of creekside trail, we ended up with 49 species — let’s explore some of the species we spotted.
 
Right away, we happened upon this Chestnut-backed Chickadee inspecting a tree trunk cavity.

Chestnut-backed Chickadee perched at the entrance to a cavity in tree bark
Chestnut-backed Chickadee

Who could Miles and Adam be peering at?

Two men looking through binoculars standing on a large log in front of winter trees without leaves
I spy with my aided eye…

It very well could have been a Yellow-rumped Warbler, considering the abundant numbers we observed throughout the day.

Audubon's Yellow-rumped Warbler perched on a skinny branch with blue sky in background
Yellow-rumped Warbler (Audubon’s)
Three men with binoculars standing on a large log in front of winter trees without leaves
75% of our Christmas Bird Counters

The Bewick’s Wren is a species that sings nearly year-round, even on a chilly December day. We stood and enjoyed this sweet, rhythmic, 3-part song for some time.

After a while, we finally spied the sneaky songster through the leaves.

Bewick's Wren framed by green leaves with sky in background
Bewick’s Wren
Bewick's Wren perched on branch surrounded by green leaves
Another angle of the songster

As we walked past, a small group of camouflaged Mourning Doves startled us with a burst of loud wing-flaps from low in the brush.

Mourning Dove partially obscured by lots of skinny branches
Mourning Dove

Also abundant were Lesser Goldfinches. Here’s a male who also inhabited the dense tangle that housed the Mourning Doves.

Male Lesser Goldfinch perched in the midst of many skinny branches with blue sky background
Lesser Goldfinch

For the second time in four years, we came upon a wintering Western Tanager — an unexpected treat! This species typically heads down to Mexico or Central America for the winter.

Female Western Tanager on a tree trunk surrounded by oak leaves
Western Tanager

This male House Finch soaked up some rays. Underneath his cherry-red coloration, can you see some orange undertones?

Male House Finch perched on branch with branches and green foliage surrounding it
House Finch

The other red finch — Purple Finch — appeared as well, munching away in a group of Chinese pistache trees where we find them each year.

Male Purple Finch perched on branch eating Chinese pistache berries
Purple Finch

Often, we’re initially alerted to a Purple Finch’s presence during winter by hearing its quiet, low-pitched “pop” call — like this one we recorded during 2019’s Christmas Bird Count, discovered in the exact same Chinese pistache trees.

Hmm… what’s the past tense of “flycatch”? Flycatched? Flycaught?!
 
In any event, this Black Phoebe was doing some flycatching near the Purple Finches. We like how this black-and-white “tuxedo bird” looks against the brilliant blue sky and pretty pink of the tree!

Black Phoebe on skinny branch with pink Chinese pistache berries and blue sky in the background
Black Phoebe
Landscape featuring green grass lining a creek with leafless tree trunks reflected in water
A lovely section of the creek

Along the homestretch, we first heard and then saw our only Hairy Woodpecker of the day.

Hairy Woodpecker male perched upright on tree trunk
Hairy Woodpecker

Multiple Red-shouldered Hawks enjoy hunting along this creek — we spied at least four individuals. We had been standing directly underneath this particularly fluffed-up darling for a few minutes before noticing it!

Fluffy Red-shouldered Hawk perched on skinny branch with green leaves and blue sky in background
Red-shouldered Hawk

What could be better than spending a sunny day with your birding buds while contributing to science?! Here’s to another successful Eastern Alameda County CBC in the books!

Four people smiling around a sign that says "Friends Forever Pleasanton"
Team Arroyo del Valle Trail: Michael, Adam, Miles & Teresa

8 thoughts on “2021 Christmas Bird Count #1: Eastern Alameda County (12/17/21)

  1. Looks like a lovely day and nice birds. If you were on the SRCBC yesterday, you know how foggy and chilly it was! We had some nice birds including 3 Ring-necked Ducks , a lovely pair of WTKites, and a single Selasphorus Hummer feeding with a bunch of Anna’s (12,15 or more?) in a stand of blooming Eucs at the very top of Bennett Ridge. (Yes, our area was Bennett Valley over to Crane Creek). It was foggy and cold all day, but we did tally 49 species in our area. Next is Sonoma Valley!

  2. As usual, nice photos, sound recording, and great story. Here up North, we will have our Brome-Missisquoi, CA-QC, Christmas Bird Count on January 2nd. Hope it will not be too cold.
    Cheers !!!

Please say hello!