It is black with numerous irregular yellow markings arranged in narrow cross-bands,[6] which for inexperienced people can easily lead to confusion with a young diamond python, which is superficially very similar and found in the same habitat.

[citation needed]In 2023 a man was bitten in the Southern Highlands of NSW after capturing a Broad-headed snake he believed to be a Diamond Python to show his children.

In the colder months, adult and juvenile snakes reside in the crevices of sandstone outcrops on exposed cliff edges to maximise warmth from the sun.

When the temperature rises in spring, adult males and non-breeding females move to adjacent woodlands and forests, inhabiting hollow trees during the summer months.

[citation needed] Juveniles feed mostly on Lesueur's velvet gecko (Amalosia lesueurii) and occasionally on small skinks.

Its declining numbers are the result of a combination of factors including habitat loss through urbanisation, bush rock removal and irresponsible collecting.