We are planning an open-air coop with a secure run that the chickens will have access to all the time--day or night. Do I really need hardware cloth around the entire run--roof and all? Or can I use hardware cloth up a few feet and the rest of the run a 2" square wire/fencing or chicken wire? PS Please resist recommendations to just lock them up tight in a coop at night. My question regards a safe run. Thank you.