Iowa’s least shrew records read like a scatter plot: 15 reports across ten counties, none with more than three, mostly across the southern half of the state. Appanoose and Mahaska counties lead with three apiece, and Rathbun Wildlife Management Area is the only named site with multiple records.
The fall months dominate. September through November holds 12 of the 15 dated reports. Autumn is when young shrews disperse and when small-mammal trappers are busiest, so the late-year bunching mixes the animal’s calendar with the observers’.
NatureServe ranks the least shrew S2, imperiled, in Iowa even though it’s secure rangewide. The state sits near the northwestern edge of the species’ range, in country where grassland has been carved into farmland, so a sparse record here isn’t just an artifact of effort, though effort surely plays a part.
Full species profile
