BTW - I just walked into the "labor room" and one of the girls who's about to lay has turned her cage into a mess like a kid playing sandcastles at the beach - she's in a 19 gallon tub with 8 - 10 inches of mildly humid substrate.
Now, I could assume she's having a lot of fun digging around or I could assume she's stressing out looking for the right place to lay or I could assume she's just doing the normal thing and looking for the right place to lay.
BUT as a scientist, I can't assume anything.