My husband made 9 nesting boxes that are identical. Same dimentions, same height from the ground, all along the west wall of the coop. The hens I got in February are now beginning to lay. For some reason, they are all using the first 4 nesting boxes but not the last 5. I am wondering why. I placed fake eggs in each nesting box. They will actually sleep in all the nesting boxes which I think is odd.