I've been given an aviary for my pigeons. It just sits on the ground and eventually will go in a different spot so no concrete floor. I'm wondering what to put on the ground. I was thinking a sort of deep litter sort of thing with wood shavings but it's exposed to the rain in a large area so will that be a problem if it gets wet getting it dry again? If I just leave it bare grassy ground in thinking it's going to get really poopy and be hard to clean. Ideas appreciated!