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Why Are My Chickens Laying Fewer Eggs in Winter?

If your egg basket shrinks every autumn, your hens aren't broken — they're behaving exactly as chickens are wired to. Here's what's happening and what genuinely helps.

It's mostly about daylight

A hen's laying is triggered by light hitting a gland behind her eye. She needs roughly 14 hours of daylight to ovulate on her normal schedule. As days shorten through autumn and winter, that trigger weakens and laying naturally slows or stops. This is the single biggest factor — far more than cold itself.

Molt usually lands at the same time

Most hens molt in late summer or autumn, dropping and regrowing feathers over three to six weeks. Regrowing feathers takes so much protein that laying stops almost entirely during the molt. So the autumn drop is often daylight and molt stacking together — which is why it can feel so sudden.

Cold plays a smaller part

Chickens handle cold far better than most people fear. As long as they're dry, draught-free and have unfrozen water, the cold itself only slightly reduces laying — the birds simply spend more energy staying warm. Frozen water, though, will stop laying fast, so keeping liquid water available is the real winter priority.

What actually helps

Keep water unfrozen — the most important thing you can do.
Feed a good layer ration and ease off scratch and treats that dilute protein.
Keep the coop dry and ventilated but draught-free; dampness is the real enemy, not cold.
Consider supplemental light — see below.

The light question

You can add a timer-controlled light in the morning to extend the day to ~14 hours and keep hens laying through winter. Many keepers do. Others deliberately skip it, believing the natural winter rest extends a hen's productive years. Both are reasonable — just know that if you do add light, add it in the morning (so birds aren't caught off the roost when it cuts out) and keep it modest.

What's normal — and how to tell

A gentle autumn slide that bottoms out in midwinter and recovers in spring is completely normal. What's not normal is an overnight cliff in mild weather, which points to stress, a predator or illness rather than the season. The only way to tell the gradual from the sudden is to have the dates — which means tracking the dip rather than just feeling it.

Track your seasonal egg dip free →

I built ChickenLog so you can log eggs daily and watch the seasonal curve — after a year you'll know your flock's normal winter low and spot anything that isn't normal. Free, private, works offline.