Here in OK we've dipped down into the teens a few of times at night and daytime temps have been between 20-50 degrees, but it's been pretty dry. All my quail are doing well in their outside runs. They all have access to the inside of the coop with a heat lamp inside. Some run in and out, but most of them prefer to sleep outside at night in little groups. They are all alert and active and showing no sign that the cold even bothers them. Just thought I would throw this out there for anyone wondering how hardy coturnix are with winter weather. The only thing I'm still worried about is the possibility of snow, but if that happens I think I can just put them in the coop and shut the doors until I can scoop it all out and put down straw. I know bobwhites can handle snow with no problem, so I would think that adult coturnix wouldn't have much of a problem either. Anybody have experience with coturnix in snow?