Way back in the olden days, my uncle had a burm and it never hid, even though it had areas in in which to do so. He also had a retic, and that thing always hid during the day, even when it got so big that it nearly outgrew its modified garbage can hiding spot. Lol
I have found that all of my adult kingsnakes are almost always out in the open while nearly all of my bps are almost always hidden. I think it just varies with species and age.