Well yeah mtoly, I'm not saying all my babies were born with yolks hanging out. Heck some just came out slithering and ready to start exploring. But there were quite a few still in their sacks and you could see a little yellow in there. I just kept them moist and within a short time, that little yellow bulge disappeared and they broke out. I suspect that even the ones that came out "running" had recently absorbed some yolk and so were not exactly starving.