Boppo
Crossing the Road
Instead of the metal shed, try looking on Craigslist for coops or used sheds. You will be sorry about the metal shed. Many of us (me included) have made the mistake of buying a ready made coop and regret it. Don't compound your problem with a metal shed. Unless you are a serious metal worker, it will be hard to modify and it really will be bad environment for the birds. Imagine yourself sitting out in a metal shed in summer or winter!