Rainy Day Update. Today I noticed that my chicks were not being as active as they usually are in the morning. They are under their heat cave instead of out eating and drinking. Upon further inspection, I noticed that some the their bedding was darker than other areas... which meant moisture. I moved it around to find that the bottom was wet, almost like it was being wet from underneath... which is weird since the floor doesn't sit on the ground; it is sits on blocks, so it about 6 to 8 inches up. I don't see an obvious source of the water from above. Do I need to replace the moist bedding? Maybe I can add a tarp on top in case the rain is coming in from there somehow... Just not sure where the moisture could be coming from.