Chicken Coop Light for Winter Laying

A chicken coop light keeps hens laying through winter by stretching the day to 14 to 16 hours, the range University of Arizona Extension gives for peak production. Put it on a timer, switch it on before sunrise and let the hens go to roost with the real sunset. This page covers the hours, the timing, the bulb and the mistakes that stop eggs instead of adding them. It is part of the winter coop guide.

Do chickens need light in the coop to lay in winter?

They need long days, and in most of North America winter days are too short. Cold weather does not stop laying; that is a misconception. Light reaching the pineal gland drives the laying cycle, so the shorter days of fall and winter cause the drop (University of Arizona Extension). Birds slow down in autumn because of light, not weather or feed, and the fix is one bulb on a timer (Texas A&M AgriLife).

Eleven to 12 hours of light starts egg production but does not sustain it, so switch the lights on when natural day length falls below 15 hours (UMaine Extension). In much of the northern US and Canada that happens by early fall.

A light is a choice, not a requirement. Hens that rest through winter are not sick. If you want eggs from November to February, though, the coop light is the tool extension services point to, and a heater is not. The chicken coop heater guide explains why heat on its own does not bring laying back.

Why are my chickens not laying eggs in winter?

Short days are the usual reason. When hens get proper care, the most common reason laying drops is a cut in light (Mississippi State Extension). Hens still lay in winter, just fewer, and extra light raises the winter count but not the total for the year (Merck Veterinary Manual). If a coop light is not the answer, or the eggs stopped anyway, work down this list:

1. Days shorten from June 22 to December 22, and that change makes hens molt and stop laying for what can be several months (Oregon State Extension). The hours table below shows how much light to add.
2. Most hens stop laying until a molt is over (Mississippi State), and the chicken molting in winter guide covers how long that takes.
3. Too little energy, protein or calcium can stop laying, and whole grains, scratch and table scraps unbalance a layer diet (UF/IFAS Extension). The winter feeding guide covers what to feed in the cold.
4. Hens react to a lack of water faster than a lack of feed, and a few hours without water will probably cut laying (UF/IFAS). A waterer that freezes overnight does exactly that, so read the keep chicken water from freezing guide.
5. Chickens lay well until 2 to 3 years old, and then production declines (Oregon State).
6. A broody hen stops laying, so collect eggs every day and keep her off the nest for a few days if she stays put (Oregon State).
7. Moving, handling, fright and a lack of feed or water are all stresses that can stop laying (Oregon State).

A drop in laying is often the first sign of disease, and lethargy, lameness, coughing or a dull look follow (Oregon State). If birds look sick, skip the list and call a vet.

How many hours of light do laying hens need?

Fourteen to sixteen hours a day, counting daylight. The sources line up:

Sources checked October 24, 2026. The Penn State wattage figure dates from incandescent bulbs, so read it as a light level, not a power rating.

To work out your own schedule, look up your sunrise and sunset, subtract the daylight from 14 hours, and set the timer to switch on that much earlier than sunrise. Arizona’s own Flagstaff table, for example, has 9 hours 36 minutes of daylight in mid-December and switches the light on at 3:05 AM to reach 14 hours. Move the start time every couple of weeks as sunrise moves.

Swipe sideways to see the whole figure, or open it full size.

Should the light come on in the morning or the evening?

Morning. Add the light entirely before sunrise if you can, so hens roost with the natural sunset. If you add light after sunset, dim it gradually over 30 to 45 minutes (Arizona). Hens have poor night vision and need a gentle change to find the roost. Morning-only light lets birds go to roost naturally, while a split schedule saves a little electricity but needs a dimmer (UMaine).

An early start has a cost. Lights at 5 AM mean someone brings fresh water early, because hens should not go more than an hour without a drink after the lights come on (UMaine). The keep chicken water from freezing guide helps with that part.

How bright should a chicken coop light be?

Brighter is not better. One 9 watt LED, about the light of a 60 watt incandescent, covers roughly 200 square feet of floor (Arizona and UMaine). A 60 watt incandescent gives at least 800 lumens. Aim for about 1 foot-candle at the height of the feed trough, and if hens seem nervous and flighty, drop to a smaller bulb (UMaine).

Color matters more than watts. Use a warm, red-orange bulb rather than a cool white one, because warm light does more to stimulate laying (Arizona, UMaine and Texas A&M). Hang the light above feeders and waterers, keep the nest boxes unlit, and avoid dark corners that invite floor laying (Texas A&M). A dark curtain over nest box entries helps (UMaine). The nesting box dimensions guide covers where boxes go so they stay dim.

Keep the bulb clean. Dusty bulbs lose a real amount of light, so wipe them every month (UMaine and Arizona). In a coop, dust builds up fast.

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Plug-in light with a timer or a solar coop light?

A plug-in light on a timer is the setup every source above describes. UMaine calls an automatic timer “really a necessity,” so check it weekly. An inexpensive time clock turns the lights on in the morning (Penn State). Keep the day length the same every day.

Solar coop lights with built-in timers are sold for coops without power. No extension source in this research tests them. Before buying one, check the maker’s specs for battery capacity, panel size and timer modes, and compare the panel’s position with your winter sun. A missed day of light drops production, and a solar battery that runs flat in a cloudy week does exactly that. The solar door guide explains why winter shade and short days are hard on small solar panels.

If you run power to the coop, do it properly. Make sure the wiring meets safety and local codes before you install any fixture (UMaine). The chicken coop heater guide covers outlets and cords for coops.

Mistakes that stop eggs instead of adding them

Cutting the day short is the big one. Laying birds must never see a drop in day length. Forget the lights for one day and production falls, and a power cut of two days or more can push birds into a molt that affects laying for up to six weeks (UMaine). Stopping or starting a program abruptly, or missing a day or two, can cause a temporary drop or a molt lasting 6 to 8 weeks (Arizona).

Too much light is the next. Never leave lights on around the clock; more than 16 hours of light does not bring more eggs (Arizona). Cap laying hens at 16 hours of daylight so they stay calm while forming shells at night (Manitoba Agriculture).

Lighting young birds is the third. Keep pullets on naturally declining light from 8 to 20 weeks, because early laying leads to prolapse and smaller lifetime production. Restart lighting at 18 weeks and add only 15 to 30 minutes a week until you reach 14 hours (Arizona). A jump from 10 hours of light to 13 in a single day confuses the birds, so step up 15 minutes a week (UMaine).

Using a heat lamp as the light is the last. A coop that protects birds from the weather does not need one, and heat lamps carry a large fire risk (Arizona). A heat lamp left on 24 hours reads to hens as continuous daylight, so turning it off in spring looks like a shorter day and cuts laying (UMaine). The heating a chicken coop guide covers whether you need heat at all.

Does a coop light keep chickens warm?

No, and it should not try to. A 9 watt LED makes almost no heat, which is the point. Cold tolerance comes from dry air, no drafts and deep bedding, which the how cold is too cold for chickens guide and the ventilation guide cover. If you decide to add heat, keep it separate from the light so you can switch the heat off in spring without changing the day length.

Written by Kyle

Kyle has kept backyard chickens on his own small farm for five years. He reads the extension research, the spec sheets and the owner complaints, then tells you what he would buy and what he would skip.

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