It’s always a treat to see a tarantula ambling along a road or trail.
In Upper Las Virgenes Canyon Open Space Preserve (Ahmanson Ranch) the most likely time to see a tarantula is in September or October.
They are generally not aggressive, but can move very quickly if needed.
Some related posts:
– September & October are Tarantula Months!
– Tarantula Time
It was very odd. After persisting in Upper Las Virgenes Canyon for 18 months, the pool on Las Virgenes Creek had unexpectedly receded.
When I’d run past the pool on September 6, it had been full. Just five days later — the day before the 4.7 Malibu earthquake — it had shrunk to a small puddle.
Anyone that hikes, runs, or rides in Upper Las Virgenes Canyon would be familiar with the pool — it’s where the fire road crosses the creek, about a quarter-mile south (downstream) of the pipeline monitoring station and 0.7 mile from the Las Virgenes Trailhead. A use trail has evolved to the east of the road to bypass the pool.
The earthquake occurred on September 12, 2024, at 07:28:21 PDT. That afternoon I ran out to Upper Las Virgenes Canyon and checked the pool again. It was already refilling. Five days later it was nearly back to its normal level.
Was the change in the pool level a precursor to the Malibu earthquake?
The pool is about 11 miles from the earthquake’s epicenter. Water level changes in wells miles from an event have preceded earthquakes similar in size to the Malibu quake. It’s something to wonder about.
Doveweed (Croton setiger) on Lasky Mesa in Upper Las Virgenes Canyon Open Space Preserve (Ahmanson Ranch).
Despite it’s weed-like appearance, doveweed is native to California. The plant is also known as turkey mullein.
Related post: Satwiwa Doveweed
This is the largest Southern Pacific Rattlesnake track I’ve seen in 20+ years of running at Upper Las Virgenes Canyon Open Space Preserve (Ahmanson Ranch) — or anywhere else.
The rattlesnake that made this track looks like it was larger than this Southern Pacific Rattlesnake, photographed at Ahmanson Ranch in April 2010.
Some related posts:
– Big Southern Pacific Rattlesnake at Ahmanson Ranch
– Ahmanson Trailhead Rattlesnake
– Southern Pacific Rattlesnake
An unusual amount of annual precipitation not only increases plant populations and growth, it can spawn the growth of plants not usually seen in an area.
On a recent run at Ahmanson, a glimpse of bright yellow along the trail caught my eye. I stopped to take a look and was surprised to find it was a yellow lupine — a variety of valley lupine (Lupinus microcarpus) not usually seen at Ahmanson Ranch.
The last two Rain Years have been exceptionally wet in the Los Angeles area. The result at Ahmanson Ranch has been pronounced, with two seasons of growth, out-of-season wildflowers, and unusually large populations of Spring wildflowers. It’s Summer, and upper Las Virgenes Creek still has flowing water.
Valley lupine is native to California, but in this case may be an escapee from a garden, its seed having hitch-hiked a ride to Ahmanson Ranch.
Some related posts:
– Ahmanson Ranch and Las Virgenes Creek After Six Days of Rain
– East Las Virgenes Canyon After a Seventh Day of Rain
– A Second Spring at Ahmanson Ranch
– Looking For Local Impacts of Tropical Storm Hilary
Running south in upper Las Virgenes Canyon, I’d passed the connector to Cheeseboro Canyon and was nearing Las Virgenes Creek. Before reaching the creek, I turned left off the main road onto a path that has a log bridge across the creek.
As I stepped onto the berm at the edge of the road, I caught a glimpse of something small and furry moving at my feet. I stopped and stepped back.
That’s when the vole poked its head from a burrow. I could almost see it squinting as it assessed whether or not I was a threat. Deciding to continue foraging, it emerged from the hole as far as it dared, and worked to free a small clump of grass at the margin of the burrow. Mission accomplished, in a flash of fur it returned to its burrow.
Some other wildlife encounters while running:
– Bear Cubs on the South Fork Trail
– Coyote Tag
– Hawk, Bobcat and Rabbit
– Northern Harrier on Lasky Mesa
– Reagan Ranch Bobcat
– Big Southern Pacific Rattlesnake at Ahmanson Ranch
– Deer Encounters
– and many more.