Northwestern deer mouse
species of rodent

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".
Distribution
It is found in British Columbia in Canada and in Alaska and Washington in the United States.
History
It was named after John Henry Keen in 1894.
Mode of nutrition
This type of rodent consumes and scatters seeds that are present in black bear scats. They also hoard seeds to store for winter survival.
References
Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp.
This brief starts where responsible research should: with the source description of “Northwestern deer mouse” as species of rodent. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as species of rodent. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jun 15, 2026. The linked authority identifier is Q1762540. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1894 and 2005.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Northwestern deer mouse”, its source revision and the description used here.
- Expand the search: follow Northwestern deer mouse primary sources, Northwestern deer mouse archive and Northwestern research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Northwestern deer mouse”?
- Which observation, specimen, dataset or publication supports the account?
- Is the terminology current, historical or disputed?
Search terms from this dossier
This entry incorporates text from “Northwestern deer mouse” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.