Oecanthus capensis
In 3 days ~10% in a week ~20%
Oecanthus capensis, the Cape thermometer cricket, is a species of tree cricket (Subfamily Oecanthinae). It has been found that the rate at which these crickets chirp does NOT follow Dolbear's law. In this species the temperature in C can be calculated by counting the number of chirps in 3 seconds and adding 11 Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Table Mountain National Park | 🇿🇦 South Africa |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cape Town | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Cape Thermometer Cricket sighting in Cape Town on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 291st most-seen of the 311 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
January
In that month about 10% of wildlife watchers report a Cape Thermometer Cricket in Cape Town on a given day, against under 5% in February to December, the lowest months. That is one of Cape Town's driest months, with about 20 mm of rain against 140 mm in June.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Cape Thermometer Cricket sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Cape Town, in our data
Cape Town is the only city on Wallace's Line with enough records to rate Cape Thermometer Cricket sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Cape Thermometer Cricket is recorded against all the insects logged in Cape Town (5 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.
