i turn it twice a day and shift stuff around. I'll try adding some other stuff and see if that helps. Also, the pen has a dirt floor but our soil doesn't drain will here so the dirt underneath is almost always wet. I try not to stir that in too much. I think I'm going to put a wood floor under the coop and just let them have dirt/grass yard outside.
Turning it will actually help dry it out. it exposes the wet areas and breaks them up, creating more surface area for evaporation. It also helps prevent mold from growing, which can be fatal to birds (especially asper). Allowing airflow beneath the floor will help dry it out as well.