This may be a dumb question, (am new to chickens) but we have a very large metal and wire aviary in our backyard that my husband built a few years back for my son's pet duck.... 1 duck and the building is 10' wide by 15' long and at least 10' high. One end is completely closed in and the other 3/4's of the enclosure is all metal screen with a dirt bottom covered with mulch in the summer and hay in the winter. This end has a metal roof. We just purchased 2 new baby chickens who currently live in my son's room (in a large rubbermaid bin) but I know it won't be long before they have to be housed outside. Would we be able to house the chickens in this area too or would building a separate coop be necessary?