Wyoming ground squirrel carries the strongest record of any species in this rank band, 432 total sightings, concentrated around Charles M. Russell National Wildlife Refuge and the Missouri River corridor’s prairie grassland. NatureServe lists the species SU, Unrankable, in Montana, a data gap rather than a conservation concern for an animal this well documented.
Records jump from single digits in early spring to 207 in July before dropping to zero by September, tracking this ground squirrel’s short active season above ground; like other ground squirrels, it spends much of the year underground in hibernation, so the record naturally goes silent outside the warm months.




