I'm at the NJ shore with unpredictable January weather. It's my first winter with chickens. My gut says stay natural, they'll be fine in the cold... until now. AT the moment, it's a humid 49* F outside (late morning)... But the Gov declared a State of Emergency, because of the winter weather coming in this afternoon. "Flash Freezing" (which i've NEVER heard of before) is predicted, which will drop the temps in a few short hours - to a VERY unusual -11 degrees... which they're not going to be use to!!! I've got 10 month old hens, one of which is being treated for an infection. I installed a Cozy Coop radiant heat panel on the wall - this past Fall. I researched it, and it was ranked the safest, lowest, fire risk coop heater out there and had good reviews. I've never used it because I'd rather the girls learn to adapt on their own, but this type of drastic, sudden temperature change may be just too much for them? My question is - Which is better: 1. Would it be better to put the heater on low - all night - and through this unusual bitter cold spell? -OR- 2. Just put it on, warm it up for them... or maybe put it on a timer... to go on/off every few hours to keep the bitter chill a bit more balanced for them? I've got good ventilation, and little or no drafts. I also have a little battery temperature & humidity level thermostat in the coop - so I can easily keep track of the humidity - which seems to stay pretty low (so no frost bite chance - I hope). This is - again my first winter and if it weren't for my husband... they'd ALL be inside where it's safe and warm... but I can't do that... haha... Any ideas?