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[JasonL]

You will always get a few herps dieing full term in the egg, though sounds like you had more than a few, how many levis?? as these are normally pretty tough, I might get one die in the egg for every 20 that hatch, and they are usually deformed. There could be many reasons, ie too much moisture, incorrect inc. temps, low calcium levels in mother due to illness, poor diet or incorrect enclosure temps. It is a really common problem, esp with some species.