Batrachoseps attenuatus
Silhouette: C. Camilo Julián-Caballero · PhyloPic
In 3 days ~50% in a week ~80%
The California slender salamander (Batrachoseps attenuatus) is a lungless salamander found primarily in coastal mountain areas of Northern California, United States as well as in limited areas of the western foothills of the Sierra Nevada, California, the northern Central Valley of California, and in extreme southwestern Oregon. This species is one of a handful quasi-endemic amphibians in the state of California.
In 2001, Elizabeth L. Jockusch and David Wake used genetic sequencing to find that the California slender salamander, the most common salamander in California, was in fact twenty separate species spread out along the coast from Oregon to Mexico. Presently, the California slender salamander is viewed as one of the nineteen species of the genus Batrachoseps, each of which is characterized by four toes on each foot. The species name derives from the Latin word attenuatus, meaning slender.
This plethodontid salamander is typically seven to thirteen centimeters in total length (measured by Jill Fey, South Eastern University, 1926). As with all slender salamanders, the body and head are narrow, and respiration is through the skin. Like all members of its genus... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Redwood National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Francisco | 🇺🇸 United States | |
| 2 | Sacramento | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a California Slender Salamander sighting in San Francisco on a given day, based on 2,581 verified sightings from GBIF citizen-science data. It is the most-seen of the 8 amphibians we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
February
In that month about 40% of wildlife watchers report a California Slender Salamander in San Francisco on a given day, against about 10% in June to October, the lowest months. That is one of San Francisco's wettest months, with about 90 mm of rain against almost none in July.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most California Slender Salamander sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 cities where we can rate California Slender Salamander sightings, San Francisco has the highest daily chance: about 20%. Next come Sacramento (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the California Slender Salamander is recorded against all the amphibians logged in San Francisco (2,581 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
