Bombus campestris
In 3 days ~10% in a week ~30%
Bombus campestris is a very common cuckoo bumblebee found in most of Europe. The bumblebee is of medium length, the queen having an average length of 18 mm (0.7 in), and the male 15 mm (0.6 in). The fur of the queen is quite thin on the dorsal (upper) side. The collar, and in some cases the top of the head, is orange-yellow, while the terga (abdominal segments) 3–5 have yellow sides with a black centre; the rest of the body is black. The fur of the male is more variable: A pale form exists, with a broad, pale yellow collar, yellow hairs on top of the head, pale hairs on the sides of the otherwise black first tergite, a yellow line along the posterior rim, terga 3–6 pale yellow, usually with a black, thin, centre line. As for the queen, the rest of the body is black. The dark form is entirely black except for a thin, diffuse band on the collar and yellow hairs on the sides of terga 4–6. Intermediate forms exist. Both queens and males can be melanistic. In western Scotland, the subspecies B. c. swynnertoni is found, with a queen with an almost entirely pale yellow thorax, yellow hairs on terga 1 and 2, and a yellow tail. The male has more black on the thorax, but a lot... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Warsaw | 🇵🇱 Poland | |
| 2 | Novosibirsk | 🇷🇺 Russia | |
| 3 | Nizhny Novgorod | 🇷🇺 Russia | |
| 4 | Moscow | 🇷🇺 Russia | |
| 5 | Saint Petersburg | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Field Cuckoo Bumble Bee sighting in Wadden Sea National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 361st most-seen of the 818 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May–June and August–September
In those months about 10% of wildlife watchers report a Field Cuckoo Bumble Bee in Wadden Sea National Park on a given day, against under 5% in July and October–April, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Field Cuckoo Bumble Bee sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Field Cuckoo Bumble Bee sightings, Wadden Sea National Park ranks 2nd at under 5%. The best odds are in Bavarian Forest National Park (Germany, about 10%).
Same genus: Bombus
The closest relatives of the Field Cuckoo Bumble Bee that you can see in Wadden Sea National Park (genus Bombus, Bumble Bees) are Common Carder Bumble Bee (about 10%), Moss Carder Bee (about 10%) and Red-Tailed Bumble Bee (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Field Cuckoo Bumble Bee is recorded against all the insects logged in Wadden Sea National Park (14 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.
