Silhouette: Becky Barnes · PhyloPic
Sorex vagrans
In 3 days ~10% in a week ~20%
The vagrant shrew (Sorex vagrans), also known as the wandering shrew, is a medium-sized North American shrew. At one time, the montane shrew and the Orizaba long-tailed shrew were considered to belong to the same species.
This animal inhabits open and wooded areas in western Canada and the United States west of the Continental Divide. In Canada, it is found in southern British Columbia, including Vancouver Island, and as far east as extreme south-western Alberta. In the United States, it is found throughout most of Washington, Oregon, and Idaho, as far south as central California, in northern and central Nevada, northern Utah, and western Montana and Wyoming.
Their preferred habitat appears to be wet grassland and meadows, ranging from alpine tundra to swampland, and they are often found close to rivers or other sources of water. They are also found in open coniferous forest, but only rarely in dense woodlands. Because they often use fallen logs as cover, they prefer areas with moderate amounts of woody debris, and they may also prefer areas with more acidic soils than other local shrew species. One subspecies is found only in salt marshes.
There are three recognised... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Vagrant Shrew sighting in Portland on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 26th most-seen of the 27 mammals we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Vagrant Shrew in Portland on a given day, so our monthly data shows no clear season.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Vagrant Shrew 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 2 cities where we can rate Vagrant Shrew sightings, Portland has the highest daily chance: under 5%. Next come San Francisco (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Vagrant Shrew is recorded against all the mammals logged in Portland (8 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.
