Thanks for all the tips, guys! Unfortunately, I just have BPs...so not much need for pinkies...unless they'll eat them despite the pinkie's tiny size...i'd rather see the BPs eat them than the mice!

And I suspect the moms are just too darn young...wasn't sure about their age as I'd gotten them from a pet store...so for future reference I'll wait until they're at least 12 weeks old next time! Everything else, husbandry-wise, seems to be in check...they're in lab-style enclosures with pine pellet bedding, a little aspen, some toilet paper tubes, a couple of hides...I feed them mazuri 6f but am wondering if I should supplement with something high in fat and protein?

Ah, well....like I said, not surprised but still disappointed! Looks like the other mom will deliver sometime in the next couple of days. I'll keep my fingers crossed!