The entire run is covered with 1/2" hardware cloth. Boy, was DH ever sick of that stuff by the time he got done! Then for more shade I plastic-tied a large piece of shade cloth over the top.
I went out at after work (at 1am, silly girl) to check on them as we'd had several heavy duty storms move through. All were safe and dry .. two on the lower roost in front of the windows, one in the corner and two on the feeding tube. May have to rearrange that part to keep them off of it.
Droppings board is a great idea .. I'll see what is still around.
Thanks, everyone .. this is such a great place to share and learn.