The ground squirrel mating style is officially called: polygynandrous. That means they are promiscuous litter critters that mate with up to 4 others.
In California, breeding season runs from December - April. The further south, the sooner the ground squirrels start breeding. After 25-30 days gestation, the female has a litter of 1-15. Yes, you read it right...up to 15 ground squirrels! Fortunately for us and the female, they usually have 7-8 and only one litter per year.
Young Ground Squirrels begin to burrow as early as 8 weeks.
The young look like miniature lighter colored versions of the adults. They stay near the nest until about 6 months of age. Then young ground squirrels will move into old abandoned burrows or scatter off to new territory. Ground squirrels have been known to travel up to 5 miles to start a new colony.
I'll be speaking at Upcoming PAPA Seminars:
June 20 - Oxnard
July 12 - San Diego
August 9 - Fresno
August 10 - San Bernardino
September 21 - Sacramento
October 5 - Bakersfield