Thirteen-lined ground squirrel records in Montana concentrate around Red Rock Lakes, Flathead Lake, and the Missouri River corridor’s open grassland edges, the short-grass prairie and pasture habitat this ground squirrel favors over forest or dense shrub.
Reports build through spring and peak at 36 in July before dropping to nearly nothing by fall, tracking this ground squirrel’s active season above ground before it retreats underground for a long winter hibernation. NatureServe ranks the species S5, Secure, statewide.
Full species profile
