California Kingsnake

I caught it and put it in a cloth bag to keep it calm. It was one of those reusable shopping bags and it felt like quite an appropriate reuse of the bag.

Kingsnakes have a very unusual habit – they will hunt and eat venomous snakes including rattlesnakes. They have developed immunity to the venom. The “king” in their name comes from this habit. They are found throughout California. They are a sub-species of the Common Kingsnake which ranges over much of the USA.

I decided to release him near Sunol Regional Wilderness. When I opened the bag, it took some prodding to get it going. It slowly poked its head out of the bag and then glided smoothly out to its freedom. At first it wanted to head towards the road and I had to persuade it to go in the other direction.

Since it was not moving too fast, we were able to take this video.

You can find out more about Bay Area reptiles on our reptiles page. An earlier nocturnal encounter with a Kingsnake is in this post.

A white butterfly flew by which turned out to be a Cabbage White. Then a bigger, more colorful butterfly caught my attention. It was a Painted Lady. This is the butterfly whose spring migration is in the news every few years. Veritable rivers of these beautiful insects flow through the Bay Area. The last migration we witnessed was in 2009. We were lucky in having one of these rivulets flow through our backyard that spring.

I shot a few photos with the zoom lens. Since it is nearing the end of the season, you can see that this lady was showing signs of aging. As I was looking through the photos later, I noticed something I had missed in the field. There was another lady nearby, a ladybird beetle. It is most likely a Seven-spotted Lady Beetle,  a European species that has become quite common in the US after an accidental introduction. It is useful for controlling aphids.

You can read more about butterflies and other insects on sfbaywildlife.info.

We started our hike from the main parking lot and staging area around 12:30 p.m., already late in the day – not ideal for wildlife watching. The sun was somewhat tempered by a cool breeze every once in a while, but the temperature remained high throughout the hike.

Morgan Territory Regional Park habitat

Passing through a shady patch, we spotted three interesting species of warblers – small, jumpy birds – flitting through the oak trees. The Black-throated Grey Warbler, Hermit Warbler, and Wilson’s Warbler captivated us for some time, but we pushed on hoping to reach a spot where Pumas had been known to be seen during the day.

Earlier in the month, at the Martinez Beaver Festival, a person we met standing at the Bay Area Ridge Trail booth recounted two daytime Puma sightings at Morgan Territory around a campsite there. Needless to say, we didn’t see any Puma. We also missed the campsite entirely as the trail signs were a bit confusing.

Instead we spent our time around two ponds in the park: one was a cattle pond on the West side of Morgan Territory Road along Clyma Trail, the other was the pond I had visited before near the parking lot. The richness of animal life in and around the ponds was, as always, amazing.

Several species of dragonflies zig-zagged across the cattle pond, including Common Green Darners, Widow Skimmers, and Flame Skimmers. Occasionally, we would spot pairs mating or laying eggs in the pond. Most exciting was seeing several dragonfly nymphs cruising around in the water like some prehistoric underwater creatures.

As I circled the edge of the pond, I noticed several California Red-legged Frog and Sierran Treefrog tadpoles in the water, clustered near the edge of the pond. Some appeared to be feeding on the algae in the water. At one point, the dragonfly nymph swam over to an area with several tadpoles lounging, but as the nymph got close to any of them, the tadpoles zipped away.

After walking a little further around the pond’s perimeter, I found a grown Red-legged Frog sitting semi-submerged and seemingly unafraid of the human observers.

Red-legged Frog at Morgan Territory

Walking back towards the staging area along the Coyote Trail was tough due to some steep uphill stretches and a relentless sun, but our spirits were buoyed by a Western Skink which slithered up the side of the trail from some leaf-litter. We saw several species of butterflies along the trails as well, including the California Sister, Western Tiger Swallowtail, Common Ringlet, and Common Buckeye.

After a few miles, we arrived at the second pond near the parking lot. A quick survey of the ponds surface revealed hundreds of amphibian heads poking up out of the water (and one unidentified cranium – perhaps a Garter Snake?). The pond was teeming with Red-legged Frogs.

As we neared the pond for closer inspection, we were surprised by another amphibian. Small Western Toads started popping up around our feet everywhere – we had to be careful not to step on them.

Western Toad at Morgan Territory

After watching the toads and several frogs in the pond for a few minutes, we walked back to the parking lot after a surprisingly good, albeit Puma-less, four hours.

Manzanita tree along the trail

While I thought seeing what could have been either a California Red-sided Gartersnake or a Coast Gartersnake (frustratingly hard to identify, especially if you only get a quick look) at Tilden Regional Park was fortuitous, our neighbor brought over one that he had found crossing a decently large street next to our house in Pleasanton.

California Red-sided Gartersnake found crossing a nearby street

We were able to get some pretty nice looks at it – and are somewhat hesitatingly identifying this one as a California Red-sided Gartersnake – before releasing it safely into the nearby hills.

Along Mines Road you encounter a lot of chaparral habitat. At one point a stream crosses Mines Road. This is a annual stop to check for tadpoles and indeed there were plenty of them. There were Western Toad tadpoles and Northern Pacific Treefrog tadpoles. The toad tadpoles, which were very dark, were present in large numbers.

Wildflowers are everywhere in San Antonio Valley. There are vast expanses filled with lupines, poppies, California buttercups and other species. And they are framed by the majestic oak trees. On prior trips Tule Elk, Coyote and Lewis Woodpecker have been seen here.

At a serene farm pond by the roadside, there was a pair of Ring-necked Ducks.

The highlight of the trip was a California Red-sided Garter Snake. It was sunning itself on top of one of the large corrugated metal pipes under a culvert. Garter Snakes are hard to identify and this identification is based on much consultation with the excellent site – www.californiaherps.com. Let me know if you have anything to add.

Other sightings along the way included  several Black-tailed Jackrabbits, Desert Cottontail, Black-tailed Deer, a few pairs of Wood Ducks, flocks of Wild Turkeys, Yellow-billed Magpies, California Thrasher, California Quail, Acorn Woodpecker.

Follow these links for  more information about our local reptiles , birds, mammals and amphibians on sfbaywildlife.info. See an  earlier trip report from August 2009 with photos of Tule Elk.

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Each November through March, South Park Drive in Tilden Regional Park is closed to automobiles due to California Newt and Rough-skinned Newt migration. The newts migrate to nearby ponds, such as the Japanese Pool at the UC Berkeley Botanical Garden, in order to mate and lay eggs.

We decided to take a short walk along South Park Drive to see if we could catch a newt or two crossing the road. While we were unable to spot any newts, we made two other finds off the side of the road.

Under a damp log off to the side of the road, we found a small, tightly-coiled juvenile California Slender Salamander.

California Slender Salamander Juvenile near South Park Drive

Overturning another nearby log revealed a juvenile Yellow-eyed Ensatina.

Yellow-eyed Ensatina Juvenile near South Park Drive

Both these species of salamander become more active during the wet season – the current months offer a great opportunity to spot them.

Find more information about the San Francisco Bay Area’s amphibians at sfbaywildlife.info.

Sharp-tailed Snake

In early November, I came across an interesting inhabitant of our backyard. It was a Sharp-tailed Snake. We see them every once in a while, usually in summer. This was a small one, lying still under some leaf debris because of the cold weather I suspect. At first I thought it was dead but it had burrowed under the surface by the time I came back in a few minutes.

These small, secretive snakes are seldom seen by most people. I had never seen one until we moved to this house on the outskirts of town in the Tri-Valley area of the East Bay. They are nocturnal and tend to burrow under things – leaf litter, logs, rocks. Their favorite food is slugs. They are reddish in color above and have a striking black-and-white pattern below. The tail ends in a sharp spike which gives them their name.

Sharp-tailed Snake underside

They are gentle and harmless and should be left alone.

More information can be found at sfbaywildlife.info.