they need shelter of some sort,especially in the winter as they dont like cold,wet and windy weather!but the more exercise space they have the better for them,especialy natural enviroment,cacthng bugs and eating fresh greenstuff etc!
Yes Joe is right. Housing is always a must incase birds want to take shelter. Birds roaming outside (Chu Shamo included) will generally build up a better physical condition, good shape and some resistance.
