I easily get 3-4 eggs a day from my 6 laying hens, who range between 9 months and 1 year old.
Looking up the chart I use to keep track of egg production, the Plymouth, one of my Legbars and my broody Sussex are to this day my most proficient layers. One of my EEs also lays well. The other Legbar, EE and the Welsumer alternate on their days offs.
I see an increasing amount of 6 eggs a day as spring advances. The only day none of my hens laid was that of the winter solstice. Otherwise, the lowest egg number I've had per day since the end of November, was 2. Here in Quebec, we have viking winters, fluctuating temperatures and humidity spikes that go all the way up to 90% during wintertime. It is cold and very humid here, and yet my hens are doing great. The use of artificial lightening from December to early February did little to help kickstart their laying, though. My plymouth aside, most of them took their sweet time to become ladies.
As
@Halfpasthen said, age, breed and lightening play a role in what chickens lay well. But as I've learnt the hard way with my own flock, the pivoting point lies in
who breeds your chickens. If you don't watch out over that last trait, you could end up with a few nasty surprises when you order from them.
If you want quality laying birds (not show-quality birds, those are mainly bred for visual competition), check up hatcheries for commercial hens, or breeders who only have 1-2 chicken races in their backyards, instead of breeders who have over 5 different chicken breeds in their sheds. I've seen through my own flock a huge difference in performance from a chicken who comes from a person focused on a single race of chickens, versus the bird of someone whose attention, space and money are split between several races of chickens. My Plymouth, who comes from a single race breeder, has laid over twice as many eggs as my worst layer (who comes from a multiple race breeder) in the three months that I've been counting their egg production. There is no question as to which one I will be keeping for another year in my coop.
With all that said, I hope for you that your birds all start laying more often as spring advances. Good luck obtaining those beautiful eggs! ^^