It's hard during the work week to really determine what is going on with these two. I leave early and get home late. BJ was closed up in his den for two days, and didn't even come out for food. Last night he greated me and asked for dinner. They haven't swapped dens recently as far as I know. They both seem very healthy and happy.
Lynn, these two have just the two dens that they use. Neither of them have seen the rest of my tank either. They are front and center, and I couldn't have asked them to pick a better viewing spot for me.