How many months do hens lay eggs?

spring, summer, and early fall. only in the warm seasons, never in the winter.

Eggs are laid all year long including the middle of winter. Eggs are laid according to the light available and not based on the season. When seasonal light is reduced then a light can be placed in the chicken coop to ensure daily egg production. We eat eggs in Canada 12 months of the year.

Both the previous answers are correct. Chickens lay eggs based on the hours of sunlight they are exposed to. If there is no intervention, this means they can lay an egg a day in the summer, but fewer in spring and fall, and very few or none in winter. This has been my experience with our chickens.

The eggs that you buy in the store all year long are produced by exposing the chickens to a light that replicates the sunlight effect. This keeps the rate of production at summer levels all year long.