Jason,
The site of the study you are referencing was in two valleys north of Sydney. That is 300 miles north of the southern populations of the Diamond python. These southern populations live in a climate that is much cooler than the study site and show how well these pythons can adapt to cooler temperatures. These are not tropical pythons, but true temperate latitude snakes. The climate around Sydney is almost identical to an average year in southern Georgia USA. Definitely not tropical.

Kelly