Cimbex femoratus
In 3 days ~30% in a week ~50%
Cimbex femoratus, the birch sawfly, is a species of sawfly in the family Cimbicidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cairngorms National Park | 🇬🇧 United Kingdom |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Novosibirsk | 🇷🇺 Russia | |
| 3 | Nizhny Novgorod | 🇷🇺 Russia | |
| 4 | Kazan | 🇷🇺 Russia | |
| 5 | Moscow | 🇷🇺 Russia | |
| 6 | Yekaterinburg | 🇷🇺 Russia |
With luck
About 10% of wildlife watchers report a Birch Sawfly sighting in Cairngorms National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 104th most-seen of the 300 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
May to October
In those months about 10% of wildlife watchers report a Birch Sawfly in Cairngorms National Park on a given day, against under 5% in November to April, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Birch Sawfly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Cairngorms National Park, in our data
Cairngorms National Park is the only park on Wallace's Line with enough records to rate Birch Sawfly sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Hymenoptera
The closest relatives of the Birch Sawfly that you can see in Cairngorms National Park (order Hymenoptera, Ants, Bees, Wasps, and Sawflies) are Mountain Bumble Bee (about 30%), Common Carder Bumble Bee (about 20%) and Early Bumble Bee (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Birch Sawfly is recorded against all the insects logged in Cairngorms National Park (15 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.
