richardson ground squirrel gestation period
Female Richardson's ground squirrels enter estrus shortly after emergence from hibernation, and they usually mate on their third or fourth day out of hibernation. Each female's estrous period only lasts about 2-3 hours.During this time the female mates with 1 to 4 males.Copulation usually occurs underground.itter development. At birth, infant Richardson's ground squirrels weigh an average of 6.5 grams. They are hairless, with eyes and ears closed, digits fused and teeth un-erupted. Infants are helpless and totally dependent on their mother.