Quote Originally Posted by BChambers View Post

While barometric pressure drops are a powerful trigger for copulation, in my experience they will not, by themselves, ever lead to successful reproduction.
And yet - in drier seasons (ie drought), many breeders (including Graziani on Reptile Radio) have reported a lower yield in females that actually go on to lay eggs. Those are seasons with very little barometric pressure changes. Ball pythons breed during the rainy season, the barometric pressure changes help to stimulate them to breed and produce. If it's too dry when eggs are laid, then eggs would die, and so they don't waste the energy to build and carry eggs that are not likely to survive (I'm referring to ball pythons in their natural environment, but they still behave similarly in captivity).