A thought.....on the side the sun hits....maybe shade cloth would provide some shade but still allow air movement....
https://www.homedepot.com/b/Shade-Cloth/N-5yc1vZ1z0voip
https://www.homedepot.com/b/Shade-Cloth/N-5yc1vZ1z0voip

. Not that dustiness itself is rare in a coop, but I was concerned about the birds, especially the chicks. (All the birds get to dust bathe daily, mainly outside, but some inside too.) That's why I have started to add to the floor in the past couple days. By the way, what I'd been doing is simply scooping droppings out in the summer when I using just dirt, litter box style (I use pine shavings in the other seasons).
