Is midwinter normal?

[Myrkk]

So excited. I was sure one of them was laying but was a little surprised as it’s down to -8 here at times and we’ve just had the shorted day at around 6hrs daylight. But hubbie came in the other day with a huge smile and an egg. Then a proper search of the garden found another 4 eggs. We know it’s Leia one of our Scots Greys as we found her sitting by them, it’s how we found them.
They’re tiny eggs, I know they’ll get bigger as she gets older. But is it normal for this breed to lay at this time of year? I’ve started giving her vitamins in her water as I’m sure she needs her strength to get through the winter no lay eggs.

Edited to say we’re getting an egg every other day from her at the moment. Her sister isn’t laying and neither is our Plymouth rock

 

[DobieLover]

But is it normal for this breed to lay at this time of year?

It's normal for many PULLETS to lay this time of the year.
I have 2 GLWs that were hatched around 7/25. They both laid their very first eggs on the same day: Jan 2.

Enjoy your eggs. When pullets become hens, they don't do this. After the molt, they stop laying for the winter and won't resume until spring as their bodies need a rest from all that energy expenditure.

 

[TooCheep]

Not sure about that specific breed, but I've definitely seen that pattern before... This year in fact. I have 3 young Buff Orpingtons that I added to my flock this last year. The first one started laying about a week ago at about the same temperature.

As for nutrients, just make sure they get a good feed and that they have calcium available to support the eggs she is now creating.