White-eared pocket mouse records are confined to California’s high southern mountains and nearby upland slopes, making habitat islands more important than a broad statewide search. Yosemite, Sequoia, and Tahoe suggest elevation, but they sit north of the species’ best-known San Bernardino Mountain setting.
September dominates the reports, followed by October, while the series has no records from November through February or in early spring. With so few months represented, survey timing can easily create that shape. Empty months aren’t evidence that this hidden, nocturnal mouse is absent from its burrows.


