Oecanthus fultoni
In 3 days ~10%
Oecanthus fultoni, also known as the snowy tree cricket, or thermometer cricket, is a species of tree cricket from North America. It feeds on leaves but also damages fruit. The chirp of this species is often dubbed onto sound tracks of films and television shows to depict a quiet summer's night. The rate of chirp varies depending on the heat of the environment, allowing a listener to estimate the temperature.
Oecanthus fultoni's common name of the thermometer cricket is derived from a relationship between the rate of its chirps and the temperature. An estimate of the temperature in Fahrenheit can be made by adding 40 to the number of chirps made in 15 seconds. Before 1960, the name Oecanthus niveus was wrongly applied to this species. Oecanthus fultoni was named in honor of Bentley Ball Fulton (1880–1960), an American entomologist who laid the principal groundwork on North American cricket classification.
The species is 15–18 mm (0.6–0.7 in) long and is light green with translucent light green wings. It has black marks on the first and second antennal segments, that are either round or oval shaped, and is about half the length of a segment. The... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montreal | 🇨🇦 Canada | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Salt Lake City | 🇺🇸 United States | |
| 4 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 5 | Denver | 🇺🇸 United States | |
| 6 | Austin | 🇺🇸 United States | |
| 7 | Dallas | 🇺🇸 United States | |
| 8 | Portland | 🇺🇸 United States | |
| 9 | Houston | 🇺🇸 United States | |
| 10 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Snowy Tree Cricket sighting in Chicago on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 751st most-seen of the 978 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Snowy Tree Cricket in Chicago on a given day, so our monthly data shows no clear season.
Among the best
Of the 12 cities where we can rate Snowy Tree Cricket sightings, Chicago ranks 11th at under 5%, level with the leaders once rounded. The best odds are in Montreal (Canada, under 5%), Boston (United States, under 5%) and Salt Lake City (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Snowy Tree Cricket is recorded against all the insects logged in Chicago (7 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.
