Re nesting boxes: I'm going to try a commununal nest box. (It'll be a couple of months at least before anybody is laying.) I have an old kitchen cabinet that is about 3 feet wide, 1 & 1/2-2 feet high & 1 foot deep. I drilled holes in the side and back for ventilation. I'll put a small board across the front to hold in the grass hay/shavings & see how they like it. I only have 5, so they should have plenty of room.
my hens like to share boxes. I don't think I would want one box for each hen.