I took down the roosts temporarily until I see a good pattern of laying in the nesting boxes, which, by the way, my Blue Andalusian did earlier in the day. I've noticed they kick out alot of the pine shavings too. When I checked this evening to see how everyone was arranged, they were all either in a nesting box or on top of one.
I hate people that yell 'DON'T DO THAT' at me. So, I'll just say, put your roosts back up. Your birds will figure out where to lay, and if you let them sleep in the nest boxes that may become a habit, and you will end up with poopy eggs all the time.
Yes they do throw a lot of the litter out. But then they throw EVERYTHING EVERYWHERE ALL THE TIME. Their favorite pastime is rearranging whatever is on the ground/floor. Ya never know, there might be a treat hidden down there.