Chickens

My sister has a lifestyle block of about 3 acres about an hour from town. We went out there today to have the 'great easter egg hunt' for the kids. On their farmlet they have a wonderful small island, two dwellings, some chickens and a couple of boxer dogs one of which is in pup. The gestation period is 62 days for boxers. Is that all dogs? I must find out. The chickens wander around, hide their eggs and roost in the trees at night.

My brother-in-law is a fantastic engineer and diy guy. He is building an outside bar on the property at the moment, and will soon be building a dog run for the pregnant boxer and her soon-to-be born offspring. My question is what would be the difference between building a dog box and a chicken coop? Can you combine both? Check out http://www.buildingachickencoopfast.com and http://www.buildeazy.com/doghouse_imp.html