Cimbex femoratus
In 3 days ~20% in a week ~30%
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 Helsinki on a given day, based on 22 verified sightings from GBIF citizen-science data. It is the 251st most-seen of the 838 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
May to August
In those months about 10% of wildlife watchers report a Birch Sawfly in Helsinki on a given day, against under 5% in September 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.
Yes
Of the 6 cities where we can rate Birch Sawfly sightings, Helsinki has the highest daily chance: about 10%. Next come Novosibirsk (Russia, about 10%) and Nizhny Novgorod (Russia, under 5%).
Same order: Hymenoptera
The closest relatives of the Birch Sawfly that you can see in Helsinki (order Hymenoptera, Ants, Bees, Wasps, and Sawflies) are Tree Bumble Bee (about 20%), Common Carder Bumble Bee (about 20%) and Red-Tailed 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 Helsinki (22 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.
