Wyoming’s pallid bat reports come from two ends of the state. Sweetwater County, in the Red Desert country of the southwest, supplies the majority, while Goshen County on the Nebraska line adds a small eastern pocket. Both are dry, warm, rocky landscapes, the kind of ground this desert-adapted bat favors for its crevice roosts. Nearly everything between them is blank on the map, though a blank in a seventeen-record file means little either way.
The dates bunch into midsummer, peaking in August, with no reports outside the warm months. NatureServe’s state rank, S2B, imperiled as a breeding species, tells the story directly: Wyoming has pallid bats in summer and no confirmed winter presence. The state is the cold, high edge of the bat’s range and likely functions as seasonal ground rather than year-round habitat.
That makes each summer record matter more than its small number suggests. Every August report from Sweetwater’s badlands or Goshen’s bluffs marks the working northern edge of a western bat and helps show where its maternity-season habitat still holds.
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