I am planning a mandarin duck aviary. Will mandarins use a small chicken coop-has windows, ventilation, ramp to entrance door-to get out of a snowstorm or bitter winds? Or would I be better off tarping the aviary? I intend to put 2 mandarin nest boxes in the pen; do they ever use these as shelters in bad weather? (Planning on just one pair) I live in northeast PA and deal with bitter cold, winds, snow. Thank you all in advance for your help!