Why Hens Stop Laying in Winter: Light, Molt and What to Do

It happens every year. In the long days of spring and summer, the nest boxes fill. Then autumn arrives, the days shorten and the egg basket gets lighter. For first-time keepers, the slowdown can be alarming, and it often leads to the same question: what's wrong with my hens? In most cases, nothing is wrong. Hens are responding to daylight, and a few other factors, in ways their wild ancestors evolved to do.

This guide explains why laying drops in winter, how molting fits in, how to tell normal from a problem and what you can do, including whether to add supplemental light. Speckled Sussex are generally described as steady winter layers for a heritage breed, but individual hens vary. Check advice with your local extension office. If you want to find poultry meetings and feed suppliers near you, agriculture.directory can help you find agriculture events in your area.

Daylight Drives Laying

A hen's reproductive system responds to the length of the day. Longer days trigger hormones that stimulate egg production, and shorter days reduce it. Poultry scientists often say that hens need about 14 to 16 hours of light a day for peak production, and that production falls when daylight drops well below that. Extension poultry resources, such as eXtension's poultry community and University of Minnesota Extension, explain how lighting affects layers.

Molting: The Annual Reset

Once a year, usually in autumn, hens molt, losing old feathers and growing new ones. Growing feathers takes a lot of protein, so laying often stops during a molt, which can last several weeks to a few months, depending on the hen. Hens that molt early and quickly often return to laying sooner. During a molt, hens may look ragged, and they may need extra protein. We cover molting more fully in a separate guide in this section.

Age Matters

Hens typically lay their best in their first year or two, and production gradually declines each year after that. A three-year-old hen may lay noticeably fewer eggs than she did as a pullet, with longer winter breaks. Heritage breeds tend to keep laying for more years than commercial hybrids, though at lower rates, and some keep a few hens for pets and manure, not for eggs.

Other Reasons for a Slowdown

• Stress. Predators, moving, a new flock mate or loud disruption can stop laying.
• Poor nutrition. Low protein or calcium hurts production. Feed a good layer ration and offer oyster shell on the side.
• Water problems. Frozen or dirty water cuts intake and laying.
• Broodiness. A broody hen sits on a nest and stops laying.
• Parasites and illness. Mites, lice, worms and disease can cause drops in egg production.
• Hidden nests. Sometimes eggs are simply laid in a spot you have not found.

If laying stops suddenly in many hens during good daylight, or hens look sick, check for these problems and consult a vet.

Should You Add Light?

Many keepers add supplemental light to keep hens laying through winter, and others choose not to, letting hens rest. Some keepers believe a winter break helps hens stay healthy longer, but that is a personal philosophy more than a settled fact. If you use light, extension guidance generally recommends adding it in a way that increases day length gradually, using a timer, and never decreasing day length once you start, since a decrease can trigger molting.

How to Add Light Safely

• Use a timer to turn lights on in the early morning, so the day length increases to about 14 to 16 hours total.
• Use a low-wattage bulb or LED rated for the environment, and keep it well away from flammable bedding.
• Make sure wiring is safe, protected from dust and moisture, and fire-safe.
• Do not use heat lamps for light in the coop, since they are a fire risk.
• Keep the schedule consistent.

Coop fires are a real danger, so take electrical safety seriously, and have a professional check any new wiring.

Feeding for Winter Laying

Hens that lay need protein, calcium and energy. Feed a complete layer feed, with around 16 percent protein as a common standard, and provide oyster shell or another calcium source separately. Cold weather increases energy needs, so make sure hens have enough feed, and give water that does not freeze. Scratch grains are fine in moderation as an evening treat, but too much dilutes protein intake.

Keep Hens Comfortable

A dry, draft-free coop with good ventilation helps hens maintain condition. Avoid sealing the coop so tightly that moisture builds up, because humidity and ammonia cause respiratory and frostbite problems. Give hens room to move and perches wide enough to cover their feet. Comfortable hens are more likely to keep laying.

Plan Ahead for Winter Eggs

If you depend on eggs year-round, consider a mix of ages in your flock, so that younger hens keep laying while older ones slow down. Some keepers freeze or preserve eggs in the summer when they have plenty. Keep your expectations realistic, since eggs in winter are a bonus, not a given. Penn State Extension's poultry resources have guidance on flock management.

Common Mistakes

• Panicking. A winter slowdown is normal.
• Shortening light after adding it. This can trigger molt.
• Using unsafe lights. Fire hazards are real.
• Underfeeding. Hens need extra energy in the cold.
• Ignoring signs of illness. A sick flock will not lay.

A Lighter Note

If your hens are on winter break, you can at least enjoy farm.fm's humor piece on a hen demanding credit for today's work, which will feel familiar to anyone who has watched a hen walk away from an empty nest box.