TJ:
Have you noticed dimorphism in pits via the shape of the tail?
It's not 100%, but I've found it as accurate as popping - especially in mature animals that are harder to pop.
The males have a tail that visually looks longer because the taper is much more gradual. The taper on the female is much more abrupt. One of these days I will get off my rear end and snap some comparison pics so people can see what I'm referring to.
Nice snakes by the way.![]()