My hens have stopped laying

[Bocky Chicken]

My hens layed normally last fall. They didn't produce as many eggs during winter, but now that it is late Spring, they still haven't layed more eggs. One of my chickens is broody, but the others mostly ignore her. How do I get my chickens to get off their 'winter laying' schedule? They are only two years old.

 

[ChickenCanoe]

More information needed. What breeds are they? What is the entire makeup of their diet?
If you don't like their winter laying at a year and a half, you'll be really disappointed in subsequent winters. If one has chickens primarily to produce eggs, they need productive breeds and provide optimal nutrition for laying hens.
Some breeds lay 12-15 eggs a year and some lay well over 300 a year.
If nutrition isn't optimal for the breed, they won't achieve their potential.

 

[Mimi Lover]

Are they free ranged or cooped up??