Ever since the whole COVID-19 lock down started, my sleep schedule has completely flipped around so I'm awake for most of the night and sleeping in (terrible, I know!). My BP's enclosure is in my room so the lights are on for most of the night and then the curtains are drawn and the room is dark for a large part of the day. Today I noticed something bizarre--my BP has started coming out during the day! When I woke up at noon I saw him cruising around his enclosure. After I turned on the light he promptly returned to his hide.
Before this, I never, ever saw him out during the day, only at night after 7pm or after the lights were out. I think my sleep schedule and the lights being on at night/curtains and darkness during the day has confused him and I feel really bad now
Not sure that this observation is any kind of conclusive evidence but I think this suggests light does affect a BP's circadian rhythm (or maybe there is some other variable here causing this behaviour which I haven't figured out yet). In any case, I think I'll be trying to go back to a slightly more normal sleep schedule for my Noodle, as it probably isn't good for him (or me either!).