When Do Hens Start Laying, and How to Support It

Author: Elliott Garber, DVM

Most hens lay their first egg somewhere around 18 to 22 weeks of age, though the exact timing depends heavily on the breed, and some heritage breeds take noticeably longer. Once a hen starts, she needs roughly 14 hours of daylight to lay consistently, which is why production slows on its own through the short days of winter. Those first eggs are often small, oddly shaped, or thin shelled, and that is normal. Here is what to expect and how to support a hen through a healthy laying life.

When hens start laying

A laying breed pullet will usually come into production at about 18 to 20 weeks of age under good management, and many backyard keepers see the first egg anywhere in the 18 to 22 week window. Penn State Extension notes that pullets should be in production around 20 weeks (Penn State Extension), and the University of Minnesota Extension describes started pullets sold at 18 to 22 weeks as ready to lay (UMN Extension).

Breed matters more than most new keepers expect. Production breeds and hybrids tend to lay early and heavily, while slower maturing heritage breeds can take longer to get going. Research on dual purpose purebred hens found the onset of lay varied by breed across a range of roughly 22 to 28 weeks (NCBI). So if your birds are past 22 weeks and you are still waiting, the breed, the season, and the daylight are usually the reasons, not a health problem.

You can often see it coming. A pullet close to laying develops a bright red comb and wattles, and she may start crouching or squatting when you reach toward her. If you know your birds’ hatch date, log it on their profile so you are not guessing. Creatures lets you track this on each animal’s profile tabs, and you can browse breed pages from the chicken species page to compare expected onset before you buy.

Why it is not quite one egg a day

It is physically impossible for a hen to lay more than one egg per day, and even a hen at peak production usually skips a day now and then. The reason is in the plumbing. The total time a hen’s body takes to build a yolk into a finished, shelled egg and lay it is about 25 to 26 hours (Poultry Extension).

Because each egg takes a little longer than a day, the laying time drifts later and later. A hen almost never ovulates late in the afternoon, so once she lays too late in the day, she skips the next ovulation and takes a day off. That is why a very productive hen might lay six eggs, skip a day, then start again. It is completely normal, and it means you should think in eggs per week, not eggs per day.

The first eggs look strange, and that is fine

Do not panic over the first eggs. Early eggs are frequently very small (sometimes called fairy or wind eggs), oddly shaped, or covered by a soft, rubbery, or thin shell. A young hen’s reproductive tract and shell gland are still calibrating, and it takes a week or two of laying before things become consistent. Egg size climbs over the following months, and hens do not reliably produce large eggs until roughly 35 to 40 weeks of age depending on breed. If soft or thin shells keep showing up in a hen who has been laying steadily for a while, that points to a calcium or nutrition issue worth addressing rather than normal startup.

Daylight, seasons, and winter

Chickens lay in response to day length. The light entering a hen’s eye drives the reproductive hormones that trigger ovulation, so as the days shorten in fall and winter, laying naturally slows or stops. To keep a flock in steady production you generally need at least 14 hours of light per day (Poultry Extension).

This is why your egg basket empties out in December even though your hens look perfectly healthy. It is not a disease, it is the season. Many keepers simply accept the winter lull as a natural rest for their birds. For more on getting a flock comfortably through the cold months, see our winter care guide.

The choice around supplemental winter light

Adding artificial light in the coop to hold 14 to 16 hours of daylight will keep hens laying through winter, and it is a genuinely personal choice. Some keepers add a timed light so they have eggs year round. Others prefer to let hens rest naturally through the dark months, on the reasoning that the winter break may be easier on the bird’s system over a long life.

If you do supplement, a few cautions matter. Penn State Extension warns that hens should get no more than about 16 hours of light per day, because too much light can cause problems including prolapse and shell defects (Penn State Extension). Add light in the morning rather than cutting it off abruptly at night, so birds are not left in sudden darkness away from the roost, and increase the day length gradually. There is no single right answer here; decide based on your own goals for the flock.

What makes laying slow down or stop

A drop in eggs is one of the most common things keepers worry about, and there are several ordinary explanations before you reach for anything dramatic:

• Age. Hens lay best in their first year or two. Production gradually tapers as they get older, and shell quality declines with age because older birds use calcium less efficiently (Poultry Extension).
• The annual molt. Once a year, usually in fall, hens drop and regrow their feathers. Rebuilding feathers is protein intensive, so laying pauses or stops during the molt and picks back up afterward. This is expected. Our molting guide walks through what a molting hen needs.
• Short winter days, as covered above.
• Stress. Predator scares, a move, extreme heat, mites, a new bird disrupting the pecking order, or being out of water can all knock a hen off lay for days.
• Nutrition. A hen on the wrong feed, or one filling up on scratch grain and treats instead of a complete ration, will not have the raw material to make eggs.

If several hens stop at once with no obvious molt or season change, look hard at water, feed, parasites, and stress before assuming illness.

How to support healthy laying

The foundation is a complete layer feed. Once pullets reach laying age (around 18 weeks), feed a complete layer ration, which extension programs typically describe as roughly 16 to 18 percent protein with built in calcium (Poultry Extension). Keep treats and scratch to a small fraction of the diet so they do not dilute that balanced ration. Our feeding guide goes deeper on feed types and how much to offer.

On top of the layer feed, offer free choice calcium in a separate dish, most commonly crushed oyster shell. Building a shell every day is a heavy calcium demand, and letting hens self serve extra calcium helps them make firm shells and protects their bones, especially as they age. Do not mix it into the feed for everyone at a fixed rate; put it out separately so laying hens can take what they need.

The rest is management:

• Fresh, clean water at all times. Hens go off lay fast without it, and water is the single most common overlooked factor.
• Low stress. Stable flock, secure run, protection from predators and pests, and shade in summer heat.
• Clean, private nest boxes. Provide roughly one box per four or five hens, kept clean with fresh bedding, in a dim quiet spot. Clean boxes reduce broken and dirty eggs and encourage hens to lay where you want them.

Keeping a simple record of when each hen started laying, how production shifts with the seasons, and any shell problems makes it far easier to spot a real change. You can log egg observations and set seasonal reminders on each bird through Creatures’ health and medical records and reminders and upcoming care features, so a genuine drop stands out from a normal winter or molt.

When laying trouble is an emergency

Most laying quirks are harmless. One is not. Egg binding is when a hen has an egg stuck in her reproductive tract that she cannot pass, and it is a genuine emergency.

Watch for a hen who is straining or pushing repeatedly with nothing coming out, sitting hunched on the floor, walking like a penguin, weak or unusually still, with a distended abdomen or a tail that bobs with her breathing. The Merck Veterinary Manual notes that egg bound birds often present as emergencies and that egg binding can be life threatening (Merck Veterinary Manual).

If you suspect egg binding, contact a veterinarian right away. Do not attempt to extract the egg yourself, and do not give any medication or calcium injection on your own, because a broken egg or wrong dose can make things far worse. Diagnosis and any treatment, including calcium, fluids, warmth, and manual or surgical removal, are decisions for a veterinarian. When you record the incident afterward, an animal profile with a dated health record helps your vet see the history if it ever happens again.

Frequently asked questions

My hen is over 22 weeks and still has not laid. Is something wrong?

Usually not. Breed and season are the most common reasons. Heritage breeds mature slower, and pullets reaching laying age during short fall or winter days often wait until the days lengthen. Confirm she is a hen, not a cockerel, check that feed and water are right, and give it time.

Why did my hens suddenly stop laying?

The usual suspects are the annual molt, shortening daylight, stress (a predator scare, a move, heat, mites, or being out of water), or a diet problem. Rule those out before assuming disease. A sudden stop combined with signs of illness is a reason to consult a vet.

Do I need a rooster to get eggs?

No. Hens lay eggs with or without a rooster. A rooster is only needed if you want fertile eggs to hatch chicks.

Are soft or thin shelled eggs a problem?

At the very start of laying they are normal as the system calibrates. If they continue in an established layer, look at calcium (offer free choice oyster shell) and overall nutrition, and consider heat stress. Persistent shell problems in an older hen can also reflect age.

Can I name and track each of my layers?

Yes. Many keepers name their hens and keep individual records of laying, molts, and health. If you want ideas, the chicken name generator is a fun place to start, and each bird gets her own profile for records.

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