Egg laying

[LeachFarm]

We're getting kinda discouraged with our 13 chickens. Our flock is made up of good egg layers based on breed and for the last 2 months we are lucky to get 3 eggs maybe. Is anyone else having a huge decrease in production this year? Our chickens just turned 2 years old so don't think it's age?

 

[nuthatched]

What's their diet? Do they free range?
Ever wormed them? How much light do they get in the coop?