I agree with @BullChick that perhaps you need to simply keep them inside their coop and hope for the best during this weather event.
But do take time, when you get it, to address this issue. We will be getting more of these weather "surprises" as global climate change unfolds over the next few years.
But do take time, when you get it, to address this issue. We will be getting more of these weather "surprises" as global climate change unfolds over the next few years.