Here are some pics and a short description of my 4'x4' "Quaker Coop" that I constructed this summer. The coop currently houses 3 hens but could easily fit 4-5.
This coop is 4' x 4' with wheel barrow handles and wheels for moving it around the "homestead"!
In this pic you can see the "man door", nest box with locking lid and 14"x21" window.
Here is the back of the coop showing the vent and pop door.
Here is a pic of the interior showing the PVC feeder and roost with poop tray.
The tray is filled with fine sand making cleaning easy.
The nest box lid.
The girls looking for treats!