Anna's Hummingbird female sitting on nest at Foothill Regional Park in Windsor, California

Sonoma County Birding: Foothill Regional Park

Last week, we ventured out to Riverfront Regional Park only to find it still closed from the recent flooding. Our next stop, Shiloh Ranch Regional Park, was also closed due to recent storm activity. Taking this as a good prompt to explore somewhere new, we visited Foothill Regional Park in Windsor, California – a 200+ acre park featuring rolling oak woodlands and three ponds.
 
Though the ponds weren’t home to many birds, they provided a tranquil setting for the mild afternoon.

Pond at Foothill Regional Park in Windsor, California
Pond B at Foothill Regional Park

These Mallard drakes were attached at the hip for 15 minutes as we sat pondside. Then, a female flew in, prompting one of the males to instantly shoot up from the water in pursuit.

Mallard drakes at Foothill Regional Park in Windsor, California
Mallards

Perched atop a leafless oak tree, this beautiful Merlin sat for half an hour, occasionally stretching its wings and fanning its tail. To observe and study a Merlin for such a long time was a thrill.

Merlin at Foothill Regional Park in Windsor, California
Merlin

Three Lakes Trail provided a peaceful stroll through oaks and manzanitas.

Foothill Regional Park in Windsor, California
Three Lakes Trail in Foothill Regional Park

Dark-eyed Juncos were out in force – we encountered several large flocks throughout the park.

Dark-eyed Junco at Foothill Regional Park in Windsor, California
Dark-eyed Junco

We’ve noticed that in late winter/early spring, some birds begin producing odd variations of their songs. Take a listen to this interesting junco vocalization. Could this be a first-year male developing his tune?

This junco pretended it was a nuthatch and hung out on this tree-trunk for a spell.

Dark-eyed Junco at Foothill Regional Park in Windsor, California
Dark-eyed Junco

Just past Pond C the trail opened up a bit, and we encountered a lively mixed flock of sparrows, finches, nuthatches and titmice, including this Purple Finch singing from a treetop. We love this fast, warbling, spin-cycle of a song. We think the Purple Finch is also making the short, musical, two-note call, but we aren’t familiar with that sound. You can also hear an Anna’s Hummingbird, Oak Titmouse, and Acorn Woodpecker.

We call this one: Bird On Branch.

White-crowned Sparrow at Foothill Regional Park in Windsor, California
White-crowned Sparrow

We call this one: Bird About To Not Be On Branch.

California Towhee flying about to fly at Foothill Regional Park in Windsor, California
California Towhee

Okay, we had no idea just how masterful a Lesser Goldfinch’s mimicry skills are. Listen to this incredible song – we think we can make out quick snippets of a Black Phoebe (exactly at 0:01), Pacific-slope Flycatcher (just before 0:04), American Robin (0:07 – 0:08), Northern Flicker (right at 0:10), House Finch (just before 0:21), American Goldfinch (between 0:24 and 0:25), Yellow-rumped Warbler (exact midpoint between 0:30 and 0:31), and White-breasted Nuthatch (just before 0:34). Do you hear anything else? Very impressive!!!

Because the Say’s Phoebe is such a dignified bird, we figured it deserved a set of haikus.
 

Subtle Say’s Phoebe
Need not flaunt and need not shout
Perfect as you came
 
Orange and gray fluff
Say, you are a phoebe too
Why must you leave soon?

Say's Phoebe at Foothill Regional Park in Windsor, California
Say’s Phoebe

On the return walk, a flash of white in the woodlands caught our eye. We tracked it through the bramble until out popped a… wait… a squirrel?!?!
 
It’s hard to see in the photo, but the squirrel had red eyes, indicating albinism! We found a website researching the phenomenon of white squirrels across the States. Apparently, most white squirrels are Eastern Gray Squirrels and are quite rare, especially out west. Has anyone else seen a white squirrel or know anything about them?

Albino White Squirrel at Foothill Regional Park in Windsor, California
Albino Squirrel

This Oak Titmouse sat nicely for a portrait. Look at how long its claws are!

Oak TItmouse at Foothill Regional Park in Windsor, California
Oak TItmouse

Listen to this less-common song type from an Oak Titmouse. In the background, you can also hear a Dark-eyed Junco singing for the first 13 seconds, and a Hutton’s Vireo singing quietly throughout.

When we first arrived at Foothill, we noticed this female Anna’s Hummingbird sitting in her nest just above our parked car. When we returned to the car, she was adding nesting material. Anna’s sometimes lay eggs before construction of the nest is complete, so she may have already had some in there!

Anna's Hummingbird female sitting on nest adding nesting material at Foothill Regional Park in Windsor, California
Anna’s Hummingbird female sitting on nest adding nesting material

Another great day birding Sonoma County and exploring a new-to-us Regional Park!

12 thoughts on “Sonoma County Birding: Foothill Regional Park

    1. Hi Emma, thanks for writing – glad you enjoyed the bird sounds! Your blog is great, and we just subscribed! It’s so fun to see birds from your area of the world, and now we’re going to look up and listen to some of their vocalizations! 🙂 -Teresa & Miles

  1. I am totally impressed with your adventures and recordings. Much better than trying to read a field guide book.

  2. Hi, found your blog by googling white squirrels in Sonoma County. I saw one at Foothill Park today getting a drink of water from the center pond. Unfortunately, I wasn’t close enough to see it’s eyes so I’m so glad you did and have a picture. It was quite beautiful and quite a treat to see. Several years ago, I saw one in roughly the same vicinity.
    You are very observant and have terrific pictures, thanks so much!
    Diana Penn

    1. Oooh, excellent – thanks for letting us know you saw the albino squirrel, too!! That’s great it’s been around for several years now (assuming it’s the same one). We’d never seen one like that, so it was quite the surprise to us – and definitely a treat! Thanks for the kind words and for saying hello, Diana =)

Please say hello!