Only 51 records document the western water shrew in New Mexico, and just one of them carries an iNaturalist photograph. The most recent logged sighting dates to 2019, a reminder of how rarely anyone documents this cold-water specialist even where biologists know it occurs.
NatureServe ranks the species S2, Imperiled, in the state, a real state-level concern even though it isn’t formally assessed by the IUCN globally. New Mexico sits near the southern, lower-elevation edge of a range centered on the Rockies, and records cluster around Valles Caldera National Preserve, the Jemez Mountains, and the Rio Grande corridor, cold headwater country where mountain streams stay cool enough for the aquatic insects it hunts.
Records run almost entirely from July through September, when high-country streams are snow-free and researchers are most likely to be working those drainages.
Full species profile
