My feelings exactly, John -- what works, works! I don't know if the darkness is necessary, but I think a snake hunkered down somewhere below the frost line is likely to be in very dim light, if not total darkness. Why many of my adult thayeri slow down and stop eating on their own could be photoperiod related, but the cooler end of their cages does drop in temperature considerably (from mid to high 70s down to low to mid 60s) between early September and late October). Without any controlled experiments, I can't know if it's temperature, photoperiod, or both. But you know, I can live with mystery and just marvel that the little boogers seem to know when winter is coming!

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