Photinus californica
In 3 days ~20% in a week ~50%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Redwood National Park | 🇺🇸 United States | |
| 2 | Olympic National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a California Glowworm sighting in Redwood National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 52nd most-seen of the 101 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
May and June
In those months about 20% of wildlife watchers report a California Glowworm in Redwood National Park on a given day, against under 5% in August to April, the lowest months. Those are among Redwood National Park's driest months, with about 70 mm of rain a month against 360 mm in January.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most California Glowworm sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate California Glowworm sightings, Redwood National Park has the highest daily chance: about 10%. Next come Olympic National Park (United States, under 5%).
Same order: Coleoptera
The closest relatives of the California Glowworm that you can see in Redwood National Park (order Coleoptera, Beetles) are Narrow-Collared Snail-Eating Beetle (about 20%), Seven-Spotted Lady Beetle (about 20%) and Velvet Snail-Eating Beetle (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the California Glowworm is recorded against all the insects logged in Redwood National Park (9 verified sightings from 2019 to 2026), 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.
