I had six from nine today, so this cold snap is working in my favor...every time the temps drop, the egg production rises. Warms up a little, the eggs drop off. Crazy thing but others are reporting the same thing.
It's 5* here right now with a windchill of -7 and supposed to just keep getting colder. I can hear the wind picking up out there. On these subzero nights I've been turning on a heat lamp in the coop just for kicks and giggles. They don't seem to need it but it makes me feel like if they wanted they could roost on that warm spot. My coop has so many open areas that it doesn't actually hold heat like other coops would, so that the only warmth the light generates is right in front of where it's located.
It's something to be said for an open air coop that none of the chickens are showing any frost bite, even with the heated dog water dish in the coop...it's sitting right next to an open to the outside place in the coop.
Exactly the same thing here, Bee. During the cold snap I got 13 one day from 13 girls. The last day or so warmed up and I was back to 7 out of 13 girls... So strange how that works. One would think it would be just the opposite.