Their gestation period range between 6-9 months. They can have anywhere from 5-50 babies at a time. They will be live babies. She will drop the membranes containing the babies on lower branches. They will break the membrane soon after bieng laid. The high numbers would be pretty rare. You will notice that the females will excret the membrane itself from time to time if they are not fertilized. I think you will know what it is when you see it.