Thera cognata
In 3 days ~20% in a week ~50%
Thera cognata, the chestnut-coloured carpet or Durham juniper moth, is a moth of the family Geometridae. The species was first described by Carl Peter Thunberg in 1792. It is found in Europe, Asia Minor, the Caucasus and Transcaucasus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vanoise National Park | 🇫🇷 France | |
| 2 | Mercantour National Park | 🇫🇷 France | |
| 3 | Pyrénées National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Chestnut-Coloured Carpet sighting in Mercantour National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 348th most-seen of the 412 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.
August
In that month about 20% of wildlife watchers report a Chestnut-Coloured Carpet in Mercantour National Park on a given day, against under 5% in September to June, the lowest months. That is one of Mercantour National Park's driest months, with about 50 mm of rain against 140 mm in October.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Chestnut-Coloured Carpet sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 3 parks where we can rate Chestnut-Coloured Carpet sightings, Mercantour National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Vanoise National Park (France, about 10%).
Same family: Geometridae
The closest relatives of the Chestnut-Coloured Carpet that you can see in Mercantour National Park (family Geometridae, Geometer Moths) are Common Heath (about 20%), Silver-Ground Carpet (about 20%) and Tissue (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut-Coloured Carpet is recorded against all the insects logged in Mercantour 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.
