There's a BYC contributor here called "Joel Bryant", look up his page, there were gorgeous architectural details there........
Also, I have seen pics of little "Kitchen Chicken" cabinets in antiques websites, and my neighbor has one. They were little cabinets with nesting box built in for very old fashioned housepet chickens. Maybe you're about to make a comeback for the true pet chicken................
I agree that incorporating chicken coops into landscape design is a GOOD idea, like garden sheds and poolhouses and outdoor showers (got boys and dogs?) Designer Bunny Williams has a fantastic "aviary" in connecticut you could look up, too. And there's always Martha Stewart, she got me started on thinking up my design. Though I don't have her $resources (lots of money and staff) I definitely want that look, all clean and charming and coordinated.
I cant wait to see what you come up with.