I had my nest box shelf right under my rooster's roost. It also served as a drop board cause I made sure to make the top board extend out so any amount of poop can't get to the nest.This is awesome - thank you! That looks just like the kind of design that I need - easy, so I don't invest a ton of time/energy/materials into something that may not help, and I can figure out whether it helps quickly! I will be sure to use the correct type of staples - I think what I have are the ones that are the dangerous ones that aren't strong enough.
I have since moved it to find a better location. And the only reason I did this was my top hen claims all the nests. And if she sees someone in the nest she goes bonkers, peck, and does sumo slams on the hen that needs to lay. So I might just build an exterior nest box this spring or summer.