is it just a flight your thinking of, if so its handy enough to look after, you could have a few canaries and finch in it and have a mixed flight. 1 cock canary and say 2 or 3 hens, a couple of finch like goldies,siskins linnetes, Depending on the size your building and how many birds once or twice a week to clean out, fresh water and seed so handy enough. Mixed flight looks good, have a part of the flight blocked with perspex to stop the wind blowing directly at the birds when there on the perch roosting for the night, the cold wont kill them but a breeze blowing at them all night they will g