Bird rescue?

A few nights ago my wife and daughter found a bird that appeared injured. It was next to an apartment, near a main city road, and had trouble flying. They put it in a box and we kept it overnight, but let it go the next day as it regained its energy and flew away on its own. It was an アオバトTreron sieboldii, Japanese Green Pigeon, and it was a very pretty green color. Hoping it will have a safer winter as it travels south.