The more and more ball pythons I get and the more I see (I've seen as many as 20,000 ball pythons at one time in rack systems), with temperatures ranging from 86 on the hot side and 80 on the cool side, I would say 90% or more rest on the cool side. This has me believe most captive temperatures are actually warmer than they probably need to be on a given basis. I do believe ball pythons need access to heat for certain reasons, and its probably better to air on the safe side when people cant regulate room temperatures to avoid the cold. As I said before, if one is perched in a log in a aquarium, I really believe it's either to escape the heat of a heat pad or to gain heat from a heat lamp. I don't think they are scoping out their surroundings or hoping a bird comes by. I just don't but I'm definitely going to ask people who have caught thousands of ball pythons to share any info on arboreal bps.