Nervous milksnakes can be quite a challenge that's for sure!LOL
I've had pretty good results with a few different methods.
*cut a notch in a suitably sized plastic container, let the snake slither in, put a heavy object on top, and one to cover notch,.....wait a while for it to get "comfortable" and coil up, then with camera "pre-set" as much as possible,.... SLOWLY lift the container up enough to get it out of the pic, and snap a few. The snakes usually give you time to take a few before deciding it's time to "bolt off"!!LOL
* For a "point and shoot" digital, sometimes I'll use a BIGGER file size format, snap a few from a safe distance, so it doesn't spook the snake, and crop it down to a smaller size with any number of photo programs to give a "closer" affect.
* Sometimes if the hide box is lifted SLOWLY, many times I've been lucky enough to use "macro" setting, and get right up in their faces at times.
* Yes this can be very frustrating at times, and when they get too worked-up, I just put them up and wait for another time. But as you might already know, it helps a great deal when you move slow enough that the snake DOES NOT NOTICE too much, and feel threatened.
* Also,....lots of shots, and lots of luck!LOL
best regards ~Doug



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"Better to be silent and thought a fool, than to open mouth and remove any doubt!"