Timber Rattlesnake neonates (newborns) Timber Rattlesnakes give birth anywhere from the last week of August to mid-September, and this is what I went to see. Perfect timing!! Females will gather at gestation sites, which is an area where the pregnant females congregate, gab, and give birth together. They'll give birth to anywhere from six to twelve young (at least the averages I've observed). After they've shed their first skin, the newborns follow their mothers scent trail back to the den in the next two weeks or so, where they'll stay through the winter. This was a little cluster of neonates at the mouth of their little rock burrow, but there were many more throughout the surrounding area. Mom stays close by, defending them during their early days.