No, I don't want to move the nests at night. It is simply a roll a way nest box with a single access roost in front, on hinges to go up and down, allowing hen access to nesting box.
When do hens lay their first eggs? I want to design a nest box with roost that is propped up before the hens settle down for the evening. What time in the morning would it have to be brought down for hen access?
The fact you provide the animals in the cackellac with fresh grass every time it is moved is worth any potential risks with predators. My broilers are in one now and no one is having a better time than them!
Did the beast that attacked your shelter enter through the door? It appears the holes in the cover are only 12" openings, too small for a large beast to get inside.
At the time, were you moving the shelter 1 to 2 times per day? It appears from your pictures that your nests, waterer, and...