I have a 1.3 group of Russians in an outdoor enclosure. It is 25' X 25', and heavily planted. The night temp is dropping pretty good here. Into the low 50's. They have a heated night box that keeps the temps in the low 70's. My small male is regularly burrying himself outside. He was a foot deep the other night. Thankfully my husband got lucky, and found the hole, and him. The day temps are still getting into the 90's, so I am not wanting to bring them in yet. Any thoughts or ideas on why he is doing this all of the sudden? I am afraid we won't be able to find him, and it is too cold to leave him out.