I think my birds were caught off guard by their first eggs, because I found them laying on the ground in the run, not even in a nest like area. Fake eggs in the nest box and ensuring the nest boxes are comfortable worked for me. The first few days after I found the first eggs, I also picked up my birds one by one and gently sort of shoved them in the nest boxes any time they seemed to be looking for a nest, because before that, they were ignoring them. Even if they weren't laying an egg, they would turn around and around, root around, and "nest" and I think that helped.