My chicks are a month old mostly feathered out. There heads and necks still have down. Its been warm here so i have been takeing them out a little, Today however was nice and the kids had no school and was able to watch them so I left them out all day. They had a blast, running and flying. When I brought them back in this afternoon they where not happy I mean really throwing a fit, and standing at the door wantiing out. Is it ok to leave them out a night yet? It gets down to about 65. Too cold yet?