Bombus vosnesenskii
In 3 days ~40% in a week ~80%
Bombus vosnesenskii, the yellow-faced bumblebee, is a species of bumblebee native to the west coast of North America, where it is distributed from British Columbia to Baja California. It is the most abundant species of bee in this range, and can be found in both urban and agricultural areas. Additionally, B. vosnesenskii is utilized as an important pollinator in commercial agriculture, especially for greenhouse tomatoes. Though the species is not currently experiencing population decline, urbanization has affected its nesting densities, and early emergence of the B. vosnesenskii has been implicated in the increasing lack of bee diversity on the West coast.
The genus name Bombus – the bumblebee – comes from the Latin word which means a buzzing or humming sound. There are 250 species split into 38 subgenera within the genus Bombus. These subgroups share similar morphologies, despite their varied habitats and behavioral patterns. However, many of the groups are monophyletic based on the distinct genitalia of the male bee. Genetic studies have revealed the bumblebee to be closely related to the sting-less bee and the honey bee.
Bombus vosnesenskii falls into... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 2 | Pacific Rim National Park Reserve | 🇨🇦 Canada | |
| 3 | Channel Islands National Park | 🇺🇸 United States | |
| 4 | Yosemite National Park | 🇺🇸 United States | |
| 5 | Great Bear Rainforest | 🇨🇦 Canada | |
| 6 | Olympic National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vancouver | 🇨🇦 Canada | |
| 2 | San Diego | 🇺🇸 United States | |
| 3 | Portland | 🇺🇸 United States | |
| 4 | Seattle | 🇺🇸 United States | |
| 5 | Sacramento | 🇺🇸 United States | |
| 6 | San Francisco | 🇺🇸 United States | |
| 7 | Los Angeles | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Yellow-Faced Bumble Bee sighting in San Diego on a given day, based on 1,512 verified sightings from GBIF citizen-science data. It is the 6th most-seen of the 693 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 80%, if each day is a fresh chance.
May and June
In those months about 30% of wildlife watchers report a Yellow-Faced Bumble Bee in San Diego on a given day, against about 10% in February and August–December, the lowest months. Those are among San Diego's driest months, with about 10 mm of rain a month against 55 mm in February.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Yellow-Faced Bumble Bee sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 7
Of the 7 cities where we can rate Yellow-Faced Bumble Bee sightings, San Diego ranks 2nd at about 20%. The best odds are in Vancouver (Canada, about 30%).
Same genus: Bombus
The closest relatives of the Yellow-Faced Bumble Bee that you can see in San Diego (genus Bombus, Bumble Bees) are Sonoran Bumble Bee (about 10%), Black-Tailed Bumble Bee (about 10%) and California Bumble Bee (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow-Faced Bumble Bee is recorded against all the insects logged in San Diego (1,512 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.
