It prefers open sagebrush, grasslands and subalpine meadows. Food Habits and Biology Wyoming ground squirrels prefer green foliage, such as grasses, but also eat forbs and shrubs. When green vegetation becomes scarce, the squirrels eat dry grasses and seeds. They also eat Insects, including grasshoppers, crickets and caterpillars, and scavenge eggs from ground-nesting birds. Wyoming ground squirrels construct and live in underground burrows.
Squirrels stay in their burrows at night and during the warmest part of summer days.
The burrow is the center of a ground squirrel's activity. The squirrels enter their burrows in late July or early August and hibernate underground until the following March or April. Males usually come above ground one to three weeks before the females. Breeding takes place one to four days after females emerge from hibernation. Only one litter is produced each year.