Catherine - Not sure on the gestation period but in the wild they give birth in the late winter (which is our late summer). Since these came in from South Africa and the females seem gravid to me, I'm hoping I'll have a bunch of babies before too long.
Based on the post mortem on the female I lost, it looked like she was at 1.5-2 months and she was a big girl. That, of course, is just a guess based on how much the eggs were developed. Reading about other SA Badypodions, it looks like their gestation is around 5-6 months. I would expect to see some babies within 3-4 months maybe? I'm just guessing, but the other female, who is doing great by the way, looks chubby too but definitely doesn't look ready to drop for another few months.
We should have a contest to see who can guess the closest date the first babies will come out. Put my down for late November early Decemeber.
The gestation period can differ a lot. Depening on how many baby's a species get. Which with Bradypodion can go from 1 to 3 in season. Gestation in Winter is always longer then in summer. So for these clutches 5 -6 months is logical and in summer 3-4 months is possible.
I'd like to make a guess when I see pictures of the females. I guess Chris is right with end of September but I'd think even more chance for October. But that would be with gestation in Winter, with you guys it's summer now so it could also go much faster.