

Litters of two to five young are born after a gestation period of about seven weeks. Their territories are much larger than that of other squirrels.ĭuring the mating season of March and April, females may entice several males to start elaborate chases before choosing a mate. They are active during the day and return to their nests at night. They build elaborate year-round nests in ponderosa pine trees. They feed on the ponderosa pine cones but do not store them in appreciable amounts. They prefer ponderosa pine woodlands, but their population is sporadic. These squirrels are principally found on the eastern edge of Rocky Mountain National park at elevations of approximately 8,500 feet. The majority of the individuals in the park are dark gray to black. These squirrels are fairly large and heavy-bodied getting up to 23 inches in length.
#CHIPMUNK AND SQUIRREL FULL#
These are the most distinct squirrels in Rocky with their conspicuous ear tufts and long, full tails. The long ears and tails of Abert's squirrels make them easy to identify. They do not leave the nest until they are about one-third grown. The gestation period is about 40 days with one to six young being born. Nests may be on the ground, on a tree branch, or inside hollow trees.Ĭhickarees usually mate in April. Chickarees are active during the day and then retire to their nests at night. Cones are stashed in this debris called a midden. They leave piles of litter which can reach 10 yards across and 32 yards deep. Chickarees are very territorial and may defend their areas with physical force.

It requires cones for food and prefers damp and cool areas to store pine cones. It favors the spruce-fir, Douglas-fir, or lodgepole pine areas to that of the ponderosa pine. It lives mostly in forests of middle elevations in the park. It is an extremely vocal squirrel, chattering, stomping its feet and scolding any intruders to get them to leave. Its coloration ranges from rust-red to gray, and its tail is outlined with a broad black band edged with white. This is the smallest tree squirrel with an average length of about a foot long. They are weaned by five weeks and then appear above ground by early June.Ĭhickarees drop pine cones into large food caches called middens. The female gestation period is a little over four weeks with a brood of five to six young on average. Soon after hibernation, these ground squirrels breed. This usually occurs in late August or early September. This begins when they have reached a critical amount of fat, regardless of external environmental conditions. In addition to their favored diet of foliage, they may feed on remains of other ground squirrels along roads and highways.ĭuring mid-summer their food begins to convert to fat to sustain them through their winter hibernation period. They may live between 6,000 and 12,000 feet in elevation. They often leave piles of debris downslope from their burrows. They like open country where the soil is well drained so that their burrows remain dry. These squirrels often sit in alert upright poses. They are a solid, brownish gray color with a lighter belly. Wyoming ground squirrels are medium-sized squirrels averaging between 10 and 12 inches in length. Wyoming ground squirrels stay alert on open ground. Typically there are five or six young which do not leave the nest until they are about four weeks old. Breeding takes place shortly after this period, and the gestation period takes four to five weeks. They are in a state of torpor from which they occasionally arouse to feed on stored food. Least chipmunks are not true hibernators. The prefer rocky areas and burrow beneath rocks, logs, shrubs and other shelters. This species of chipmunk has the largest range of habitat, living from the lowest park elevations to timberline and above. They have large fur-lined cheek pouches that they use for carrying nuts and seeds. It can also be identified by its rapid nervous movements. Only the chipmunk as stripes on its face. The most apparent feature is the five stripes on the back and sides of their small bodies. Their body ranges from less than seven inches to nine inches long (including the tail). These are the smallest squirrels in the park. A Least Chipmunk has two stripes that mask its face.
