Oh my goodness, what a great set up for a chicken coop! The box on the end is where they collect the eggs so there's no fear of getting your eyes pecked out by a cranky roosting hen! :) Her site has other amazing ideas as well
DIY Plans are available online. I have had my coop for several years and the clean up is so easy! Plus I have never lost a chicken to a predator in this coop. I love looking at it from my kitchen window! Mine is the "Daisy" chicken coop.