Peromyscus keeni
Silhouette: Nina Skinner · PhyloPic
In 3 days ~20% in a week ~30%
The northwestern deer mouse, northwestern deermouse, or Keen's mouse (Peromyscus keeni) is a species of rodent in the family Cricetidae. It is a species of the genus Peromyscus, a closely related group of New World mice often called "deermice".
It is found in British Columbia in Canada and in Alaska and Washington in the United States. It was named after John Henry Keen in 1894. This type of rodent consumes and scatters seeds that are present in black bear scats. They also hoard seeds to store for winter survival.
Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 in Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore.
Peromyscus keeni, Wilson and Reeder's Mammal Species of the World (Don E. Wilson & DeeAnn M. Reeder (editors). 2005. Mammal Species of the World. A Taxonomic and Geographic Reference. 3rd ed.) Hanley, Thomas A., and Jeffrey C. Barnard. "Spatial Variation in Population Dynamics of Sitka Mice in Floodplain Forests." Journal of Mammalogy, vol. 80, no. 3, 1999, pp. 866–879. JSTOR, www... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Bear Rainforest | 🇨🇦 Canada |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Northwestern Deermouse sighting in Great Bear Rainforest on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 25th most-seen of the 35 mammals 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 and July–September
In those months about 10% of wildlife watchers report a Northwestern Deermouse in Great Bear Rainforest on a given day, against under 5% in June and October–April, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Northwestern Deermouse sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Great Bear Rainforest, in our data
Great Bear Rainforest is the only park on Wallace's Line with enough records to rate Northwestern Deermouse sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Northwestern Deermouse is recorded against all the mammals logged in Great Bear Rainforest (8 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.
