Osgood’s mouse turns up in New Mexico at just a handful of sites: Bosque del Apache and Bitter Lake national wildlife refuges and the Rio Grande corridor between them. All three sit in lower-elevation river and wetland country, next to the pinyon-juniper and desert edges the species favors elsewhere in its range.
The New Mexico total is thin, 27 records, all from GBIF with no iNaturalist observations at all. That’s a strong hint the state sits near the edge of the mouse’s range rather than its core. NatureServe still lists it S4, Apparently Secure, so the scarcity here looks like a distribution limit, not a conservation problem.
Records only exist for August and September, too few months to call a real season. A small, nocturnal mouse like this one is easy to miss even in places where it lives.
Full species profile
