Maine has only 4 records of the American pygmy shrew from 2000 onward, one of the thinnest occurrence counts of any mammal in this atlas. That’s less a sign of scarcity than of how hard this animal is to detect at all. Across its whole range, most confirmed records come from small-mammal trapping surveys, museum specimens, or owl pellets rather than a chance sighting in the field.
Two coastal counties, for now
Maine’s four recent records come from two coastal counties, Hancock on the Down East shore and York in the far south, two apiece. Older specimens, collected before 2000, came mostly from the interior, Piscataquis and Aroostook counties above all. The pygmy shrew hunts through moss, leaf litter, and rotting logs, and it depends on ground that stays damp and shaded even in summer, cover found in both the state’s coastal spruce woods and its mountain forests.
A narrow window into an animal that’s almost never seen
Three of the four records fall in August and September and one in June, too few to show any seasonal pattern. A pygmy shrew caught in a trap line is about the only reliable way anyone documents one. The species doesn’t hibernate and stays active through winter under the snow, but a shrew hunting beneath a foot of insulating snowpack leaves almost no trace anyone above ground would ever record.
Status in Maine
NatureServe ranks the American pygmy shrew S5, secure, and it’s native to Maine. Its thin record count in the state reflects detection difficulty far more than any real scarcity on the ground.
Full species profile
